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Podcast Profile: Universe Today Podcast

podcast imageTwitter: @universetoday@fcain (@fcain followed by 388 accounts on physicist, mathematician, and astronomer lists)
Site: universetoday.fireside.fm
907 episodes
2014 to present
Average episode: 24 minutes
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Categories: Astronomy • Interview-Style

Podcaster's summary: Space news, interviews, Q&As, and exclusive content from Universe Today. | Audio versions of Fraser Cain YouTube channel.

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List Updated: 2022-Dec-07 12:58 UTC. Episodes: 907. Feedback: @TrueSciPhi.

Episodes
2022-Dec-02 • 21 minutes
[Space Bites] Scientists Simulate a Quantum Wormhole, Black Hole Consumes a Star, More Moon Visitors
The best images from Artemis so far. More spacecraft are going to the Moon. Researchers have simulated a wormhole. China now has six people on board its space station
2022-Nov-30 • 36 minutes
[Q&A] Black Holes VS Brown Dwarfs, Moon Telescopes, Galaxy Collision
Which ones are more invisible: black holes of brown dwarfs? Which cheap telescope should you get? Will the Artemis program start a new era in astronomy? What will happen when Andromeda crashes into the Milky Way? All this and more in this week's Q&A with Fraser Cain.
2022-Nov-28 • 33 minutes
[Q&A] Space Questions Special
This time it's different. As always, it's your space questions, but not my answers. I invited my fellow space YouTubers to give their answers to help me with the Q&A. Enjoy!
2022-Nov-25 • 21 minutes
[Space Bites] Asteroid Explodes Over Canada, Artemis I Updates, Very Large Telescope Improvements
Updates on Artemis I. Predicting an asteroid strike with stunning accuracy. Webb’s view of Titan. New adaptive optics for the Very Large Telescope.
2022-Nov-23 • 36 minutes
[Interview] Chance for Life After The Sun Dies with Dr Andrew Vanderburg
Is there a chance for life to continue after the Sun eventually explodes? Can we find evidence of potentially habitable planets near white dwarfs, remnants of dead stars? How can future telescopes help with that?
2022-Nov-18 • 19 minutes
[Space Bites] Artemis 1 Launch, Secret Space Plane Returns, James Webb Protection Plan
SLS finally launches to the Moon. SpaceX get another contract from NASA. James Webb gets a protection plan from micrometeoroids. China continues to trash the orbit. Secret space plane returns.
2022-Nov-16 • 37 minutes
[Interview] The Existential Threat of Solar Storms with Dr Benjamin Pope
How trees can tell us a story of previous solar storms? What are the chances of having another Carrington-scale event and what would it mean? How can we understand solar storms better?
2022-Nov-15 • 41 minutes
[Q&A] Harvesting Dark Energy, Making Own Telescope, Escaping Gravity Wells
How hard is it to escape the gravity wells of massive planets for other civilizations? How hard is it to make your own telescopes? How do gas clouds become stars? Can we harvest dark energy after the Heat Death?
2022-Nov-11 • 21 minutes
[Space Bites] SLS In Trouble, James Webb Fixed, Strange Quark Star
JWST’s MIRI is fully operational again, have astronomers found the first strange star?, the first test of an inflatable heat shield, and SLS just got hit by a Hurricane.
2022-Nov-09 • 85 minutes
[Bonus] Dr Brian Keating interviews Fraser Cain
This in an interview with Dr Brian Keating that happened on his YouTube channel. We talk about how Universe Today runs, what do I want to achieve with it, how science journalism works in general and much more.
2022-Nov-08 • 42 minutes
[Q&A] Quantum Computers for Astronomy, Catching Interstellar Guests, The Book Club
Can we catch the next interstellar visitor? Why do black holes' accretion disks glow? Can we make spaceships out of asteroids? How do we know that dark matter and dark energy actually exist? All that in this week's episode of Q&A with Fraser Cain. And we've started the Book Club!
2022-Nov-04 • 19 minutes
[Space Bites] Worrying Solar Storm Data, Falcon Heavy is Back, Total Lunar Eclipse
Historical data about solar storms carved in trees, and it's a bit worrying. Falcon Heavy's back after 40 months of absence. There's a meteor shower and a total lunar eclipse in the coming days. And JWST gave us yet another version of Pillars of Creation.
2022-Nov-01 • 79 minutes
[Interview] James Webb, LUVOIR and Mindblowing Future Projects
What's the current state of James Webb? What were the main technical difficulties and what does the future look like? What comes after JWST and LUVOIR? Will it be possible to ever build a quantum telescope?
2022-Nov-01 • 44 minutes
[Q&A] DART Successor, Fixing Space Debris, Viking Missions Controversy
If Moon was created with a big collision, where's the crater? Can we fix the space trash problem? Is doing Astronomy just a waste of money that can be better spent elsewhere? What will come after DART? All this and more in this week's Q&A.
2022-Oct-30 • 34 minutes
[Interview] Bacteria That Can Survive on Mars for Millions of Years with Dr Michael Daly
How do we know that certain organisms can survive for millions of years in the conditions of Mars? What do we know about them? And where should we be looking for them on Mars?
2022-Oct-28 • 20 minutes
[Space Bites] Closest Black Hole Ever Discovered, Starlink as GPS, Early Life Killed Mars
There’s a monster black hole in our backyard (astronomically speaking). Life could survive underground on Mars for hundreds of millions of years. Starlink was hacked to work as GPS. Bad news for Arecibo.
2022-Oct-27 • 55 minutes
[Interview] Processing Astronomical Images with Judy Schmidt
All the nice space images you see on the web are processed. It's a complex process that takes the raw data from the instruments and turns them into a picture. Judy Schmidt is one of the best in this, so I talked to her about how she does it. Enjoy!
2022-Oct-25 • 40 minutes
[Q&A] Spaceships Made of Ice, Best Space Pet, Astronomy and Photoshop
How do you clean up astronomy images and what part does Photoshop play in it? Can you make spaceships out of ice found in space? When will SpaceX carry people to Mars? What pet will be the best companion for a long space trip? And even more questions in this week's Q&A with Fraser Cain.
2022-Oct-24 • 47 minutes
[Interview] Understanding Dark Energy With Most Detailed Supernovae Survey | Dr Dillon Brout
Dark Energy will determine how the Universe will die. With the help of Pantheon+, the most detailed survey of Type 1A supernovae, astronomers can understand more details about Dark Energy and the expansion of spacetime.
2022-Oct-23 • 36 minutes
[Meet the Team] Matt Williams, Writer
We continue to introduce the team behind Universe Today. In this episode meet Matt Williams. Fraser and Matt discussed long format writing, stories about the future of space exploration, science fiction novels Matt has written, how not to be too cynical and how to write fast and write good.
2022-Oct-21 • 20 minutes
[Space Bites] The Big Rip Averted, Pillars of Creation by JWST, Faster Than Light Jet
The Pillars of Creation revealed by JWST. It seems like Big Rip isn't happening after all. Black holes twisting spacetime into knots. Jets that seem to be going faster than the speed of light.
2022-Oct-20 • 26 minutes
[The Big Q] What James Webb Discovered in Its First 100 Days
It has been exactly 100 days since we got the first images from JWST. Here's an overview of all the most important discoveries that the James Webb Space Telescope did since then.
2022-Oct-16 • 31 minutes
[Meet the Team] Andy Tomaswick, Writer
We continue to introduce the team behind Universe Today. In this episode meet Andy Tomaswick. Fraser and Andy talked about Carl Sagan’s ‘Pale Blue Dot’, interest in Astronomy and how to deal with haters and trolls.
2022-Oct-14 • 22 minutes
[Space Bites] Huge Success with DART, JWST Sees Weird Rings, Moon's True Origin
DART’s results are in, it hammered Dimorphos, the Moon might just be a big chunk of the Earth, Webb sees bizarre rings around a star, and SLS gets a new launch date… at night.
2022-Oct-13 • 60 minutes
[Interview] How Understanding The Sun Changes Entire Astronomy with Colin Stuart
How understanding the Sun can change our view of all the other stars in the Universe. What will current instruments and future mission will bring. And what are the mysteries that are waiting to be solved in this field.
2022-Oct-11 • 38 minutes
[Q&A] JWST Worth the Hype? How to Build a Wormhole? How to Pass Van Allen Belts?
Are there alternatives to CMB? Will we ever build a space elevator? How can we see radiation coming from a black hole when nothing can escape it? Can you heat something with gravitational waves? Why JWST can look lame to the laymen? All this and more in this week's Q&A with Fraser Cain.
2022-Oct-10 • 61 minutes
[Interview] The Future of Telescopes. Coronagraphs with Dr. Lucie Leboulleux
Coronographs will soon be in every major telescope. They can block the light from the star and reveal things around it, like exoplanets. There's so much amazing science behind them. Like, did you know coronographs can be adaptive? We dive into all that with Dr Lucie Leboulleux. Enjoy the interview!
2022-Oct-07 • 20 minutes
[Space Bites] Ads Taking Over Night Sky, DART Aftermath, Best JWST Image
Dimorphos grows a tail. More Europa pictures from Juno. The horrifying possibility of ads in night sky. Why Jupiter’s atmosphere is surprisingly hot.
2022-Oct-06 • 67 minutes
[Interview] True Nature of Science and Skepticism with Professor Peter Vickers
In this interview, Professor Peter Vickers and I talk about the scientific method, its true nature and its place in modern society. We talk about the philosophy of science, how scientific consensus works and how it can be made better.
2022-Oct-04 • 36 minutes
[Q&A] Can JWST See Oumuamua, Why Go to The Moon, DART Images | Q&A 194
In this week's questions and answers show, I explain why a crewed mission to Venus or the Moon makes sense, if there's debris in the Lagrange Points, and why the photos from DART look so familiar.
2022-Oct-02 • 30 minutes
[Meet The Team] Evan Gough, Writer
We continue to introduce the team behind Universe Today. In this episode meet Evan Gough, who is the author of more than 1400 articles on the website. Fraser and Evan talked about the way that stories for UT are born, which traps can a writer fall into, and whether to take a university degree or not. Enjoy!
2022-Oct-01 • 19 minutes
[Space Bites] SpaceX To Boost Hubble, NASA Smashes Asteroid, Exciting Enceladus Discoveries
Humanity moved an asteroid on purpose for the first time in history. Juno flies past Jupiter. A possible mission to boost Hubble, and a mysterious blob is orbiting Milky Way’s supermassive black hole.
2022-Sep-28 • 43 minutes
[Bonus] Alternatives to Dark Matter by Paul Sutter
This is a bonus from my friend Paul Sutter. It is an episode from his podcast ''Ask A Spaceman'. He explains possible alternatives to Dark Matter, which is a very popular question in my Q&A episodes. Enjoy!
2022-Sep-27 • 38 minutes
[Q&A] Antimatter Black Holes, Wen Hop, Life Around Brown Dwarfs
In this week's Questions and Answers show, I explain what would happen when an antimatter black hole collides with a regular black hole, I try to estimate when Starship is going to make an orbital launch, and wonder if there could be life around brown dwarf stars.
2022-Sep-25 • 30 minutes
[Meet The Team] Nancy Atkinson, Senior Editor
This week's behind the scenes interview is with Universe Today's senior editor, Nancy Atkinson. Nancy has been writing for Universe Today since the early days and has contributed thousands of articles. She's also a mentor to newer writers on the team.
2022-Sep-23 • 18 minutes
[Space Bites] JWST Problems, Newborn Quasar, Detecting Exoplanets with Lagrange Points
James Webb has a problem with one of its most important instruments, SLS completes a crucial test before the next launch attempt, Europe wants to rival Crew Dragon and Starliner, and a new quasar is about to be born.
2022-Sep-22 • 62 minutes
[Interview] Solar Sail Propulsion: Reality VS Fiction with Les Johnson
Les Johnson is the Principle Investigator with NASA's upcoming Near-Earth Asteroid Scout mission that will fly on the SLS and test solar sail navigation. But at the same time, he's a science fiction author. So, in this interview, we discussed both these sides of his life.
2022-Sep-21 • 45 minutes
[Q&A] True Edge of the Universe, Nuclear Rockets Adoption, Lunar Poles Exploration | Q&A 192
In this week's Questions and Answers show, I explain the difference between the observable universe and the Hubble sphere, how satellite megaconstellations will affect smartphones and other consumer devices, and what impact Jupiter's radiation might have for life on Europa.
2022-Sep-21 • 66 minutes
[Interview] Proving the Big Bang Happened with Dr Brian Keating
This week I'm joined by Dr. Brian Keating, a cosmologist who studies cosmic microwave background radiation and leads the BICEP, POLARBEAR2, and Simons Array experiments. He also has a successful YouTube channel and podcast. We'll be discussing the evidence for the Big Bang and the impact of James Webb on our current understanding of the Universe.
2022-Sep-20 • 61 minutes
[Interview] Immune System for Your Mind Against Disinformation with Lee McIntyre
Today I'm talking to Lee McIntyre, philosopher of science and the author of a recently released book 'How to Talk to a Science Denier'. We talked about the problems with science communication in modern society, the challenges that misinformation poses, and how we can possibly fight it.
2022-Sep-16 • 19 minutes
[Space Bites] Blue Origin Explosion, CAPSTONE Problems, Space Diamonds
Uh oh, NASA’s CAPSTONE mission is having problems, A New Shepard Flight fails, Betelgeuse was recently yellow, and of course, another amazing new image from Webb.
2022-Sep-14 • 35 minutes
[Q&A] SpaceX VS NASA, AI for Space Science, Black Hole Crushing Itself | Q&A 191
We're back from hiatus! In this week's Questions and Answers show, I talk about what will happen when the expansion of the Universe reaches the speed of light, how I feel about SLS delays, what's happening with James Webb, and more...
2022-Sep-09 • 16 minutes
[Space Bites] AMAZING New JWST Image, iPhone 14 Satellite Connection, Green Sand on Mars
How iPhone 14 will connect to satellites. Why SLS didn’t launch and when it might. Growing rice in space. And a new incredible image from James Webb.
2022-Sep-06 • 29 minutes
[Meet The Team] Nancy Graziano, Producer of Weekly Space Hangout
Nancy Graziano, the producer of the Weekly Space Hangout and many of the other projects we're working on. Hear how she fell into the Universe Today gravity well, and her future plans to train the next generation of science communicators.
2022-Sep-02 • 20 minutes
[Space Bites] JWST Sees An Exoplanet, Another SLS Delay, Cosmology Crisis Continues
Artemis 1 delayed, direct image of an exoplanet from Webb, how Starlink will connect to phones, Voyager 1 is fixed, cosmology crisis continues.
2022-Aug-26 • 24 minutes
[Space Bites] Why The ‘Panic!’ Around JWST, Exoplanet With CO2, Weak Mars Astronauts
No, James Webb didn’t disprove the Big Bang. Carbon dioxide found in an exoplanet atmosphere. An amazing picture of Jupiter from Webb, pieces of other stars found in asteroid Ryugu, weak astronauts arriving on Mars, and a new way to measure distances in the Universe. All that and more in this week’s episode of Space Bites.
2022-Aug-25 • 86 minutes
[Interview] Fraser on the Chatter Podcast
Here's another interview with me from another podcast. This time I'm on the Chatter podcast hosted by Lawfare. I spoke with host David Priess about the upcoming Artemis missions, the race to the Moon and other issues relating to the politics and impact of space exploration. Subscribe to the podcast at: https://shows.acast.com/chatter
2022-Aug-24 • 56 minutes
[Interview] Tory Bruno: CEO of United Launch Alliance
My guest this week is Tory Bruno, the President, and CEO of United Launch Alliance. ULA has provided launch services for many NASA missions, including Juno, Curiosity, MAVEN, and the Parker Solar Probe.
2022-Aug-19 • 21 minutes
[Space Bites] Largest JWST Image, First Private Interplanetary Mission, Space Bubbles VS Climate Change
Rocket Lab is launching the first-ever private mission to Venus. Europe is considering space-based solar power. A new method to detect exoplanets. More evidence about the Moon’s origins. Webb’s largest every image. All that and more in this week’s episode of Space Bites.
2022-Aug-12 • 16 minutes
859: [Space Bites] JWST's First Science Results, Surgeon Robot for ISS, Booster 7 Test Fire
James Webb starts delivering actual science results, Space Launch System and Starship both go even closer to their maiden flights, remote surgery medical robot is going to the ISS, Perseverance continues to find weird stuff on Mars, and Hubble is still going strong. All this and more in this week’s episode of Space Bites.
2022-Aug-05 • 18 minutes
[Space Bites] Interstellar Meteorite Underwater, Shortest Day Ever, Earth's Magnetosphere Collapse
An interstellar meteorite could be hiding in the ocean. Why doesn’t Jupiter have rings like Saturn. The time when Earth’s magnetic field almost collapsed. The shortest day on Earth, and Planet 9 is running out of places to hide.
2022-Jul-29 • 18 minutes
[Space Bites] JWST Damage Assessment, Two New Mars Helicopters, Teaching Robots to Die
How JWST is doing after its micrometeorite strike, two more helicopters are flying to Mars, and how do you stop the Milky Way from turning into self-replicating robot probes?
2022-Jul-22 • 16 minutes
[Space Bites] SLS Launch Date, Falcon Heavy Gets Flagship NASA Telescope, Dormant Black Hole
SLS finally gets a launch date for Artemis I, JWST keeps giving the goodness, Percy finds another weird thing on Mars, astronomers find a dormant black hole and NASA will launch a flagship telescope on a SpaceX Falcon Heavy.
2022-Jul-15 • 14 minutes
[Space Bites] Booster 7's BOOM, Nuclear Mission to Neptune, More JWST Images, Space Bites
Even more pictures from James Webb Space Telescope, China's planning a mission to Neptune, SpaceX's Booster 7 suffers from an explosion, black holes are messy eaters, going under Europa's ice crust and more.
2022-Jul-14 • 18 minutes
[Space Bites] JWST First Full-Color Images Explained
NASA finally released James Webb's first full-color images. We have 5 great photos of different regions of space. So, in this video we're digesting all the great pictures we got from JWST.
2022-Jul-05 • 32 minutes
[Q&A] Turning Starship into 9m Telescope, Lunar Gravitational Lens, Robotic Exploration | Q&A 190
In this week's questions and answers show, I explain how Starship will enable enormous space telescopes, if James Webb can look at Hubble, and if future astronomers will have any way of learning about the expansion of the Universe and the Big Bang.
2022-Jul-02 • 20 minutes
[Space Bites] Mystery Rocket Crash Site Found, ISS Independence from Russia, Space Nuclear Power | Space Bites
NASA teases JWST images, Rocket Lab launches CAPSTONE, mystery rocket's crash site found on the Moon, how magnetars are created, ISS gets more independent from Russia and more.
2022-Jun-28 • 38 minutes
[Q&A] Medical Emergencies on the ISS, White Dwarf VS Red Dwarf, True Color of SLS | Q&A 189
In this week's Questions and Answers show, I explain how astronauts are trained to deal with medical emergencies if the Universe is expanding smoothly or chaotically, and what would survive longer, a white dwarf or a red dwarf?
2022-Jun-24 • 20 minutes
[Space Bites] China VS NASA, SpaceX Breaking Records, Repeating FRB Mystery
SLS finally got through WDR (almost), Falcon 9 are setting new reuse records, China is about to beat NASA to Mars with a sample return mission, Charon red spot explained and more.
2022-Jun-23 • 52 minutes
[Interview] Gaia Data Release 3 with Dr. Martin Barstow
Dr. Martin Barstow is is a Professor of Astrophysics and Space Science at the Department of Physics and Astronomy at the University of Leicester and the former President of the Royal Astronomical Society. Dr. Barstow was part of the team who worked on the recent Gaia Data Release 3, which categorized almost 2 billion stars in the Milky Way.
2022-Jun-21 • 41 minutes
[Q&A] Can ISS Be Recycled, Artificial Meteor Storms, Can Hubble See JWST
In this week's questions and answers show, I explain why most quasars are very far away, consider what would happen if you brought Pluto into the inner Solar System, and deliver the heartbreaking news of why the ISS won't be recycled.
2022-Jun-20 • 75 minutes
[Interview] Advanced Propulsion Systems with Dr. Sonny White
Dr. Sonny White is a physicist and mechanical engineer. He previously worked at NASA's Eagleworks Lab testing advanced propulsion systems, and developing ideas for faster-than-light travel. He's now working with Limitless Space, founded with the vision of advancing human space exploration beyond the Solar System by the end of the 21st century.
2022-Jun-20 • 22 minutes
[Space Bites] Starship Approved by FAA, Rogue Black Hole's Mass, Balancing Rock on Mars
FAA finally gave its approval to SpaceX for Starship launches from Boca Chica, Gaia released its third data drop, China stars continuous space presence, Perseverance finds another weird rock on Mars.
2022-Jun-15 • 48 minutes
[Interview] Self Sustaining Space Habitats with Annika Rollock
Annika Rollock is a Ph.D. student at the University of Colorado, Boulder. She is studying next generation space habitats and recently published a paper about how future space stations can remain self-sufficient, especially when support and communication from Earth are far away.
2022-Jun-15 • 38 minutes
843: How JWST Sees in Color, Where Is Dark Matter, Did Earth Life Come from Space | Q&A 187
In this week's questions and answers show, I explain how JWST and other telescopes see color, how images from observatories are released to the public, and how much of the sky can JWST see. Also, a bunch of non-Webb questions too.
2022-Jun-14 • 51 minutes
842: Liquid Mirror Telescope with Dr. Paul Hickson
Dr. Paul Hickson is a professor of astronomy and astrophysics at the University of British Columbia. Dr. Hickson is overseeing a team that built a telescope out of liquid mercury in India. The International Liquid Mirror Telescope is 4 meters across and built on top of a 3,000-meter mountain in India. This will prove the technology and allow for larger and larger liquid mirror telescopes on Earth (and eventually in space).
2022-Jun-14 • 52 minutes
840: Searching for Technosignatures with Dr. Jacob Haqq-Misra
Dr. Jacob Haqq-Misra is a geologist and astrobiologist with the Blue Marble Space Institute of Science. He studies the conditions that allowed life to spread across the Earth and searches for similar environments across the Universe. In a recent paper, Dr. Haqq-Misra suggests methods that we could search for technologically advanced civilizations across the Universe.
2022-Jun-14 • 42 minutes
841: Interview with Fraser on the Spaced Out Podcast
Here's an interview with me on the Spaced Out Podcast from the Center for Astro, Particle, and Planetary Physics at NYU Abu Dhabi. We talk about my career as a space journalist, how I approach the news, what my role is as a science communicator.
2022-Jun-10 • 18 minutes
839: James Webb Mirror Damaged, Comet Interceptor Confirmed, NASA Investigates UFOs | Space Bites
JWST got damaged by a micrometeoroid but seems to be okay, NASA buys more Crew Dragon flights, Mars rovers see interesting stuff, ESA confirms a comet hunter, UFOs get official NASA investigations, all planets get into order in the night sky and more.
2022-Jun-10 • 51 minutes
838: Using Pulsars to Navigate in Space with Dr. Zach Putnam
Dr. Zach Putnam is an assistant professor of aerospace engineering at the University of Illinois Urbana-Champaign. He's part of a team developing navigation techniques that use the signals from pulsars to always know your location, anywhere in the Solar System.
2022-Jun-07 • 50 minutes
837: Cosmology and Relativity with Dr. Leah Jenks
Einstein's Theory of General Relativity has been tried and tested many times, and so far, Einstein was right. But we know his theory must be incomplete, as it still doesn't integrate with quantum mechanics. Where are physicists searching next for the future of cosmology and relativity? Dr. Leah Jenks is a PhD recipient from Brown University, and will become a KICP Fellow at the University of Chicago.
2022-Jun-07 • 39 minutes
836: Orbit Size Telescopes, Meteors Destroying Satellites, Artificial Gravity | Q&A 186
In this week's Questions and Answers show, I answer what it would take to build a telescope as big as the Earth's orbit around the Sun, why SgrA* seems to have been rolled over on its side, and how we know the age of stars.
2022-Jun-03 • 23 minutes
835: New NASA Spacesuits, JWST Color Images Announced, Another Starship Delay | Space Bites
NASA selects two suppliers for new spacesuits, James Webb reveals the date of first color images, JUICE moves closer to launch and a new kind of solar sail gets to next NIAC round.
2022-May-31 • 22 minutes
834: What Will JWST Discover? Everything You Need To Know | The Big Q
James Webb is the most expensive and most advanced telescope in human history. Will it be worth its $10B price? What it will discover? How long will JWST last? Will it ever be serviced? All the answers are in this episode of The Big Q.
2022-May-30 • 87 minutes
833: Interview with Fraser: Defending My Belief That We're Alone in the Observable Universe
This is a special bonus episode on the YouTube channel. I was interviewed on the Street Epistemology Call-In Show to defend one of my beliefs. I chose to defend my belief that we're alone in the observable Universe. We had an interesting discussion about philosophy and other topics in space afterwards, I hope you enjoy it. Here's a link to the original full-length episode: https://www.youtube.com/watch?v=qy5-ES_2E-E...
2022-May-30 • 71 minutes
832: Jumping to Multicellular Life with Dr. William Ratcliff
How did life go from single-celled to multi-celled? Dr. William Ratcliff is an Associate Professor and Co-Director of the Interdisciplinary Ph.D. in Quantitative Biosciences at the School of Biological Science at Georgia Tech. Dr. Ratcliff and his collaborators are working with single cells of yeast, watching them make the jump to become multi-cellular organisms. It turns out, life has done this many times in the past, and not just the jump that created the modern animals we know of today.
2022-May-27 • 19 minutes
831: Meteor Storm Update, Boeing Starliner Returns, Refueling Broken Satellites | Space Bites
Boeing finally completes a demo mission, scientists grow plants in lunar regolith, NASA will launch a mission to repair and refuel a satellite, space suits are leaking on the ISS again, and more.
2022-May-24 • 37 minutes
830: Who Will Get to Mars First, Black Hole Through Earth, Dinosaurs in Space | Q&A 185
In this week's Questions and Answers show, I explain what James Webb will see when it looks at SgrA*, why black holes happen to be facing towards us, and if asteroid strikes can hurl dinosaurs into space.
2022-May-20 • 21 minutes
829: HUGE Upcoming Meteor Storm?, Starliner Success, Nova in Real Time | Space Bites
In this week's News Bites segment, I talk about the successful launch of the Boeing CST-100 Starliner, how astronomers watch a nova unfold in real-time, the (not) doorway on Mars, and the chance to see the greatest meteor storm in a generation.
2022-May-20 • 57 minutes
828: Sending Humans to the Outer Solar System with Dr. Jonathan Jiang
Dr. Jonathan Jiang is the supervisor of the Aerosol and Cloud Group at NASA's Jet Propulsion Laboratory. Dr. Jiang has contributed over 220 peer-reviewed papers in a variety of journals. Most recently, he collaborated on a paper that investigates the future of human space exploration beyond the Moon and Mars, even to the outer Solar System.
2022-May-20 • 44 minutes
827: The Lunar Crater Radio Telescope with Dr. Ashish Goel
Dr. Ashish Goel is a Research Technologist at the NASA Jet Propulsion Laboratory in the Robotic Surface Mobility group. He has helped develop the plans to build a giant radio telescope inside a crater on the Moon, providing a pristine view to the Universe, using the Moon to block Earth's radio transmissions.
2022-May-20 • 59 minutes
826: Beaming Power in Space with Dr. Stephen Sweeney
Professor Stephen Sweeney works in the department of physics at the University of Surrey. He specializes in photonics, using lasers and photovoltaics for new types of communication, remote power transmission, and other concepts in space exploration.
2022-May-18 • 58 minutes
825: Going Back to Venus with Michael Amato
Michael Amato is an engineer at NASA and has been a member of the team behind NASA's DAVINCI spacecraft which will be launching to Venus in 2029. The spacecraft will be exploring the atmosphere of Venus with more clarity and detail than has ever been seen before, giving us a better sense about how the world became so different from Earth.
2022-May-16 • 35 minutes
824: Cynicism VS Wisdom, How Big Do Black Holes Grow, Sky on Mars | Q&A 184
In this week's episode, I talk about how close to the Sun Parker Solar Probe can get, what is the smallest possible star that's turned into a red giant, why do I think aliens will need to adhere to the laws of physics, and more. Oh, and why am I so cynical?
2022-May-15 • 20 minutes
823: Milky Way's Supermassive Black Hole by EHT, Russia's ISS Bluff, Ingenuity's Problems | Space Bites
We finally have the SgrA* supermassive black hole image by the Event Horizon Telescope, China announces their plans to launch a space telescope, and Russia threatens to leave the ISS.
2022-May-11 • 37 minutes
820: Fluidic Space Telescopes with Dr. Edward Balaban
Edward Balaban is a research scientist at NASA Ames and the principal investigator of the Fluidic Telescope Experiment, or FLUTE. The idea is to create a giant lens in space out of a fluid that could maintain its shape in microgravity. The technology was recently tested during the Axiom-1 mission to the International Space Station.
2022-May-11 • 37 minutes
822: Elon Musk's Tesla in Space, Can We Get Better Rocket Fuel, Space Structures | Q&A 183
In this week's Questions and Answers show, I explain why we don't see much stuff in space unfolding in real time, how long will Musk's Tesla be a recognizable object, and what are some feasible structures we could build to help send payloads to space.
2022-May-11 • 47 minutes
821: Dealing with Lunar Regolith with Dr. Kevin Cannon
Dr. Kevin Cannon is an assistant professor of geology and geological engineering at the Colorado School of Mines. Dr. Cannon has been studying the properties of lunar regolith, developing techniques that could help to mitigate its dangers during long-duration lunar exploration missions.
2022-May-07 • 17 minutes
819: Schrodinger's Catch by Rocket Lab, Photon Ring of a Black Hole, Micronovae | Space Bites
Rocket Lab almost catches their Electron booster with a helicopter, China building an asteroid redirection mission, NASA gives out awards and astronomers find a new type of space explosions.
2022-May-05 • 95 minutes
818: Going Under the Ice with Dr. Samuel Howell
My guest today is Dr. Sam Howell, a planetary scientist with NASA's Jet Propulsion Laboratory. Sam studies the interiors of icy worlds, like Europa and Enceladus and is pioneering methods to explore their subsurface oceans.
2022-May-03 • 41 minutes
817: Can JWST See The Big Bang, Can Black Holes Disappear, Cutest Nebula | Q&A 182
In this week's Questions and Answers show, I explain why James Web still can't see the Big Bang, if black holes can "unblack hole" later in life and what is the cutest nebula in the Universe?
2022-May-03 • 49 minutes
816: Collecting Micrometeorites with Scott Peterson
Every day about 100 tonnes of space dust strikes the Earth's atmosphere. Most of these space rocks vaporize, but some fall to the Earth at meteorites. Did you know that there are particles from space falling on the roof of your house? My guest today is Scott Peterson. Scott collects micrometeorites from his house and takes pictures of them using a microscope. We'll talk about how to find them, identify them and photograph them for yourself.
2022-May-03 • 55 minutes
815: Unistellar Smart Telescope with Dr. Franck Marchis
My guest today is Dr. Franck Marchis, a senior planetary astronomer and chair of the exoplanet group at the Carl Sagan Center of the SETI Institute and Chief Scientific Officer and Founder at Unistellar. Franck helps develop adaptive optics systems for research observatories and helped develop the fully automated eVscope telescope which helps amateurs do astrophotography and contribute to astronomical research.
2022-May-01 • 17 minutes
814: Groundbreaking Event Horizon Telescope Update, OSIRIS-REx Reborn, End of SOFIA | Space Bites
NASA extended 8 space missions, EHT has groundbreaking announcements on the Milky Way's supermassive black hole, James Webb shows first images, SOFIA telescope is getting shut, Starship evaluation gets another delay, and more space news.
2022-Apr-27 • 56 minutes
813: Weird Orbits and How They Work with Dr. Renu Malhotra
My guest today is Dr. Renu Malhotra, a planetary scientist who specializes in planetary migration and orbital mechanics. Dr. Malhotra and her team have discovered that Pluto's orbit is surprisingly chaotic at small timescales and yet surprisingly stable at larger timescale. We'll talk about her research and the science of orbital mechanics that led to the current orbits of the planets in the Solar System.
2022-Apr-27 • 33 minutes
812: Quasar Dust, Grabby Aliens and Who Needs von Neumann probes | Q&A 181
In this week's questions and answers show, I talk about supermassive black hole nucleosynthesis, the threat of grabby aliens and why would we ever bother building Von Neumann Probes.
2022-Apr-23 • 19 minutes
811: Mission to Uranus, More SLS Problems, Ban for Anti-Satellite Tests | Space Bites e2
Planetary Science Decadal Survey recommends a mission to Uranus, SLS is set for another delay, Perseverance sees a Phobos solar eclipse, all Hubble's images in a single picture and other most important space and astronomy news of the week.
2022-Apr-19 • 42 minutes
810: Detecting Primordial Black Holes with Celeste Keith
My guest today is Celeste Keith, a graduate student at the University of Chicago. Celeste and her team are searching for ways to detect the presence of primordial black holes, leftover from the Big Bang. These could be an explanation for dark matter and other phenomena in the Universe.
2022-Apr-19 • 64 minutes
809: Turning the Sun Into a Giant Telescope with Dr. Slava Turyshev
My guest today is Dr. Slava Turyshev, a physicist with NASA's Jet Propulsion Laboratory. He helped to solve the Pioneer Anomaly, and is developing a mission that could use the Sun's gravity as a natural lens to focus the light from distant objects.
2022-Apr-19 • 48 minutes
808: SOFIA the Flying Telescope with Dr. Margaret Meixner
My guest today is Dr. Margaret Meixner, the Director of Stratospheric Observatory for Infrared Astronomy (SOFIA) Science Mission Operations. Previous to this role, Dr. Meixner was a Distinguished Astronomer at the Space Telescope Science Institute (STScI) and a Project Scientist at James Webb Space Telescope.
2022-Apr-19 • 39 minutes
807: True Shape of the Universe, Asteroid Mining, Alien Astronomers | Q&A 180
In this week's live Questions and Answers show, I provide the exact number of alien worlds that could detect the Earth, are we made of heavier elements made in other galaxies, will lasers remain perfectly parallel in space? And more...
2022-Apr-17 • 17 minutes
806: $500 000 for Moon Dust, Boson Breaking Physics, New Approach to Space Tourism | News Digest e1
Perseverance found its parachute, JWST cooling down its experiments, Standard Model once again in danger, Space Force releasing data to scientists, yet another approach for expensive space tourism and more top news stories of this week.
2022-Apr-15 • 24 minutes
805: W Boson Breaking the Standard Model with Dr. Paul Sutter
Particle physicists have announced an exciting discovery about the W Boson particle that challenges the Standard Model of Physics. To help me understand what was discovered and what it means for physics, I've invited Dr. Paul Sutter back to explain it. Paul is a fantastic science communicator and has a PhD in particle physics. The perfect person to help us make sense of this.
2022-Apr-14 • 58 minutes
804: What Is Dark Matter Made Of with Dr. Surjeet Rajendran
My guest today is Dr. Surjeet Rajendran, a physics professor at Johns Hopkins University. In addition to his teaching, Dr. Rajendran's research is in theoretical physics, with a strong focus on what comes after the standard model. What could dark matter be? How can gravity be merged with quantum mechanics?
2022-Apr-12 • 33 minutes
803: ILLEGAL Moon Residents, Space Power Plants, Center of the Universe | Q&A 179
In this week's questions show, I explain how other planets can have geostationary orbits, if sending tardigrades to the Moon is a violation of the Outerspace Treaty, and why everything orbiting the Sun is in perfect balance.
2022-Apr-12 • 55 minutes
802: Directly Imaging Exoplanets with Dr. Thayne Currie
My guest today is Dr. Thayne Currie, an astrophysicist at NASA-Ames Research Center and the Subaru Telescope. Dr. Currie was part of a team that directly imaged a newly-forming planet, providing evidence of another way large planets can form, and could have formed here in the Solar System.
2022-Apr-09 • 63 minutes
801: Starship Updates and Mars City Perspectives with Chris Prophet
My guest today is Chris Prophet, a freelance writer who has been covering the rise of SpaceX. He has written several books, including SpaceX from the Ground Up. His new book is called SpaceX Evolution and explains some of the company's long-term strategies to create a sustainable human civilization on Mars and beyond.
2022-Apr-09 • 73 minutes
800: Why the Universe Is Silent with Dr. Robin Hanson
My guest today is Dr. Robin Hanson, an associate professor of economics at George Mason University and a research associate at the Future of Humanity Institute of Oxford University. Dr. Hanson is famous for writing a paper describing the Great Filter, a theory that explains why we don't see aliens across the Universe.
2022-Apr-05 • 35 minutes
799: Navigation in Space, Sizes of Black Holes and Planet 9 | Q&A 178
In this week's live Questions and Answers show, I explain how big black holes are, what coordinate system astronomers use to map objects in the sky, and what could have collapsed clouds of hydrogen to form the first stars?
2022-Apr-01 • 36 minutes
798: Limits of Kardashev Scale, Artificial Stars, Can We Touch Jupiter | Q&A 177
In this week's questions and answers show, I answer the question: could we build a star? How far will humans realistically explore within the Solar System? Is there any way we can escape the heat death of the Universe?
2022-Mar-27 • 41 minutes
Episode 797: Fusion Rockets, Ditching Heat Shields, Looking Beyond the Edge of the Universe | Q&A 176
In this week's live Questions and Answers show, I explain how a more powerful rocket could reduce the need of a heat shield, if we could detect objects beyond the edge of the observable Universe through their gravity, and what are the largest objects (or spacecraft) that could hang out at a Lagrange Point?
2022-Mar-27 • 57 minutes
Episode 796: Exploring the mysteries of Triton with Dr. Jason Hofgartner
My guest today is Dr. Jason Hofgartner, a planetary scientist specializing in icy worlds of the Solar System. Jason wrote a recent paper about the nature of Neptune's moon Triton, first discovered by Voyager 2 back in 1989.
2022-Mar-21 • 42 minutes
Episode 795: Q&A 175: How Do Astronomers Measure Redshift? And More...
In this week's Questions and Answers show, I explain how astronomers use the Doppler Effect to know if objects are moving towards or away from us, I give my thoughts on Starlink as a user, and I suggest ideas on how to become a better writer.
2022-Mar-14 • 56 minutes
Episode 791: Laser Sailing with Matthew Campbell
My guest today is Matthew Campbell, a Mechanical Engineer, Postdoctoral Researcher at the Department of Mechanical Engineering and Applied Mechanics at the University of Pennsylvania. He's a member of the Bargatin Group, researching nanomaterials and their applications.
2022-Mar-14 • 43 minutes
Episode 794: Q&A 174: Could We Mine Jupiter for Hydrogen? And More...
In this week's episode, I explain how we could use Jupiter as a source of fuel for our fusion reactors, what it means to say there's a scientific consensus, and if gravitational waves can trigger earthquakes.
2022-Mar-14 • 58 minutes
Episode 793: Building an Artificial Magnetosphere with Elena D'Onghia
My guest today is Dr. Elena D'Onghia, an associate professor at the University of Wisconson--Madison's Department of Astronomy. Her research is focused on the dynamics of galaxies through simulations, theory, and observations.
2022-Mar-14 • 58 minutes
Episode 792: Preparing for James Webb with John Mather
My guest today is Dr. John Mather, Senior Astrophysicist in the Observational Cosmology Laboratory at NASA's Goddard Space Flight Center. Dr. Mather received a Nobel Prize for his influential cosmology work, helping to confirm the Big Bang. He's been involved in almost every major astronomy mission in the last few decades, including Hubble, and of course, James Webb.
2022-Feb-23 • 38 minutes
Episode 790: Q&A 173: What If We Didn't Have Space Telescopes? And More...
In this week's questions show, I explain how astronomy would be different if we didn't have space telescopes, what was the Universe like shortly after the Big Bang?, and what if James Webb detects oxygen in the atmosphere of another planet?
2022-Feb-23 • 58 minutes
Episode 789: Searching for Technosignatures with Dr. Chenoa Tremblay
My guest today is Dr. Chenoa Tremblay, a Post Doctoral Researcher at the SETI Institute. Dr. Tremblay and her team used the Murchison Widefield Array to scan the core of the Milky Way for any sign of signals from extraterrestrial civilizations.
2022-Feb-14 • 39 minutes
Episode 788: Q&A 172: Why Do We Assume Extraterrestrials Will Be Hostile? And More...
In this week's questions and answers show, I explain why people might see extraterrestrials as a threat. What could we learn about astronomy if we lived at the center of a supervoid, and how far away are we from the Big Bang?
2022-Feb-11 • 41 minutes
Episode 787: Q&A 171: Could James Webb Detect Type 2 or 3 Civilizations? And More...
In this week's episode, I explain why James Webb is actually the perfect telescope for detecting advanced civilizations, could we hide the Earth from snooping aliens, could spacecraft go into polar orbit around the Sun? And more...
2022-Feb-11 • 60 minutes
Episode 786: Peering Into the Heart of a Blazar with Dr. Andrei Lobanov
My guest today is Dr. Andrei Lobanov, a staff astronomer at the Max Planck Institute for Astrophysics in Bonn, Germany. Dr. Lobanov was part of a team that just took the highest resolution image ever seen of a blazar, using a network of space and ground-based radio telescopes.
2022-Feb-03 • 60 minutes
Episode 785: Getting Astroquizzical with Dr. Jillian Scudder
My guest today is Dr. Jillian Scudder, a PhD astrophysicist and assistant professor at Oberlin College. In addition to her teaching and research work, Dr. Scudder also answers space and astronomy questions on her blog and in her newly updated book: Astroquizzical. https://www.jillianscud...
2022-Feb-02 • 37 minutes
Episode 784: Q&A 170: Can We See The Stars In Andromeda? And More...
In this week's QA, I talk about how we can see individual stars in a galaxy like Andromeda, how we know the Universe is bigger than we can observe, and whether black holes are solid objects or infinitely dense singularities.
2022-Jan-25 • 38 minutes
Episode 783: Q&A 169: Could Plants Actually Survive on the Surface of Mars? And More...
In this week's episode, I talk about the possibility of a copy of the Hubble Space Telescope, if satellites could relay information like a mesh network, and if it's even possible for plants to survive on the surface of Mars.
2022-Jan-18 • 57 minutes
Episode 782: Going Interstellar with Andreas Hein
My guest today is Andreas Hein, Executive Director, Chairman Technical Research Committee of the Initiative for Interstellar Studies. Andreas is part of a team working to develop practical missions for interstellar exploration. https://i4is.org/
2022-Jan-18 • 54 minutes
Episode 781: Exoplanet Atmospheres with Dr. Joanna Barstow
My guest today is Dr. Joanna Barstow, a Royal Astronomical Society Research Fellow at University College London. Dr. Barstow specializes in planetary science, studying the atmospheres of planets both inside and beyond the Solar System. She's also a member of the ARIEL science team, an upcoming mission that will categorize the atmospheres of exoplanets. https://www.ucl.ac.uk/astro...
2022-Jan-18 • 35 minutes
Episode 780: Q&A 168: Why Aren't There Cameras On James Webb? And More...
In this week's Questions Show I explain why James Webb doesn't have any cameras on board, what the Universe is expanding into, and what is the point of building big telescopes when we're trapped in the Solar System?
2021-Dec-31 • 34 minutes
Episode 779: Q&A 167: Will James Webb redo the Hubble Deep Field? And More...
In this week's final 2021 QA, I explain why landing on the Moon could make it difficult for other spacecraft to land, if binary planets could exist, and if there are plans to do a JWST version of the Hubble Deep Field.
2021-Dec-20 • 57 minutes
Episode 778: Seeing the Clearest View of the Universe with Michael Zemcov
My guest today is Dr. Michael Zemcov, an associate professor at the Rochester Institute of Technology. Dr. Zemcov has proposed putting a telescope out beyond the orbit of Saturn to capture the clearest possible view of the Universe, away from the light-polluted inner Solar System.
2021-Dec-20 • 42 minutes
Episode 777: Discovering Earth-Sized Planets with Andrea Lin
My guest today is Andrea Lin, a graduate student at the Eberly College of Science at Penn State University. Andrea is working with the NEID Spectrograph, a brand new instrument that will eventually be capable of detecting Earth-sized worlds orbiting sunlike stars.
2021-Dec-20 • 37 minutes
Episode 776: Q&A 166: Does an Infinite Universe Solve the Fermi Paradox? And More...
In this week's Questions and Answers show, I explain how an infinite Universe could be the ultimate answer to the Fermi Paradox, where the energy for tidal heating comes from, and why are there always so many asteroid scare stories in media?
2021-Dec-06 • 41 minutes
Episode 775: Q&A 165: How Could We Explore the Oceans of Europa? And More...
In this week's live questions and answers show, I explain why NASA doesn't build standardized rovers, how we know the Universe is approximately 13.8 billion years old, and which are the best (and worst) entry-level telescopes to get.
2021-Dec-01 • 31 minutes
Episode 774: Q&A 164: Could Too Much Gravity Prevent a Civilization Going to Space? And More...
In this week's live questions and answers show, I speculate what kind of civilization could be permanently stuck on the surface of their planet, if rival nations could shoot down each other's spacecraft, and how do I really feel about the Space Launch System?
2021-Nov-29 • 57 minutes
Episode 773: Searching for Exomoons with Alex Teachey
My guest today is Dr. Alex Teachey, a Distinguished Postdoctoral Fellow at the Academia Sinica Institute of Astronomy & Astrophysics (ASIAA) in Taipei, Taiwan. Alex specializes in searching for moons orbiting extrasolar planets: exomoons. Learn why these could be some of the most interesting places to search for life in the Universe.
2021-Nov-29 • 34 minutes
Episode 772: Q&A 163: Is There No Way to Repair James Webb in Space? And More...
In this week's episode, I answer questions about the speed of supernovae, if a black hole can pull itself apart, is there really no way to repair James Webb, and more...
2021-Nov-22 • 22 minutes
Episode 771: QA 162: Could We Build a Particle Accelerator on the Moon? And More...
In this week's live Q&A, I explain what would happen if we build a particle accelerator around the entire Moon (and what would happen if it generated a black hole), if you can ice skate on Pluto, and is it better to do sample return missions or explore with rovers and landers.
2021-Nov-08 • 46 minutes
Episode 770: Using Pulsars to Detect Gravitational Waves: with Boris Goncharov
My guest today is Dr. Boris Goncharov, a researcher at the Gran Sasso Science Institute. Boris is part of the team using the precise signals from pulsars as a way to detect gravitational waves. This technique could be sensitive enough to even detect merging supermassive black holes.
2021-Nov-08 • 59 minutes
Episode 769: NASA's Astrobiology Vision with Mary Voytek
My guest today is Dr. Mary Voytek, the director of NASA's Astrobiology Program since 2008. Dr. Voytek and others from NASA are proposing a new 7-step framework on how they could report on the discovery of life beyond Earth. We'll discuss this new framework as well as the latest challenges in the search for life across the Universe.
2021-Nov-08 • 27 minutes
Episode 768: Q&A 161: Could You Have a Planet Made of Water? And More...
In this week's questions show, I answer if you could have a planet made entirely of water, is it our duty to spread life in the Universe? Could Planet 9 be a brown dwarf? And more...
2021-Nov-01 • 55 minutes
Episode 767: Collecting Samples with Perseverance: Justin Simon, NASA
My guest today is Dr. Justin Simon, a planetary scientist within the Astromaterials Research and Exploration Science (ARES) Division at the Johnson Space Center. He specializes in measuring meteorites and samples collected by spacecraft. We'll be talking about what it takes to sample the surface of Mars and other worlds:
2021-Nov-01 • 30 minutes
Episode 766: Q&A 160: Could We Transmit DNA to Another Civilization? And More...
In this week's questions show, I answer questions about ice on rockets, the maximum gravitational slingshot, could black holes pull you out of black holes, and more...
2021-Oct-25 • 34 minutes
Episode 765: Q&A 159: How Long Can Life Survive? And More...
In this week's questions show, I theorize how long life can survive in the Universe, could we detect a wormhole in the Solar System, what's happening with the Chinese Space Agency? And more...
2021-Oct-18 • 55 minutes
Episode 764: Habitable Hycean Worlds: An interview with Dr. Nikku Madhusudhan
My guest today is Dr. Nikku Madhusudhan, a PhD astronomer at the University of Cambridge. Dr. Madhusudhan is one of the researchers who investigated the habitability of "hycean worlds"; ocean worlds with a thick hydrogen ocean. These worlds are completely alien to anything we have in the Solar System, and yet, could have a much wider region that remains habitable than terrestrial planets.
2021-Oct-18 • 55 minutes
Episode 763: The Enceladus Vent Explorer: An interview with Dr. Hiro Ono
My guest today is Dr. Hiro Ono, the Group Leader of the Robotic Surface Mobility Group for NASA's Jet Propulsion Lab. Dr. Ono is been awarded a NIAC prize to develop a rover that could crawl into the fascinating vents on Enceladus, to search for evidence of life on this icy world.
2021-Oct-18 • 28 minutes
Episode 762: Q&A 158: Does a Titan Sample Return Mission Make Sense? And More...
In this week's live questions and answer show, I explain how astronomers measure the distance to gravitational wave events, how clean are spacecraft sent to Mars, and would it be possible to have a sample return mission from Titan?
2021-Oct-06 • 33 minutes
Episode 761: Q&A 157: Where Will We Get the Stuff to Build in Space? And More...
In this week's Questions and Answers show, I explain how we'll get the matter to build stuff out in space, what about the matter for a Dyson Sphere? How long will the International Space Station survive? And More...
2021-Sep-29 • 31 minutes
Episode 760: Q&A 156: Are We Seeing the Same Galaxy Many Times? And More...
In this week's questions show, I explain why we don't see the same thing multiple times as we look out into the Universe, could a planet orbit in the Lagrange Points of two stars, and why haven't there been any missions to Io?
2021-Sep-28 • 37 minutes
Episode 759: Q&A 155: Could We Build a Base on Mercury? And More...
In this week's questions show, I jump into the controversy between Blue Origin and SpaceX, explain why bigger telescopes are better, and talk about how Mercury has eternally shadowed craters and could serve as a place for a base.
2021-Sep-20 • 36 minutes
Episode 756: Q&A 154: How Big are Meteors? And More...
The new season has begun! We're back with an all-new series of question shows. In this week's episode, I provide a quick guide to seeing fireballs (bolides), which are the brightest meteors you can see (and sometimes hear). I explain the philosophy behind Dyson Spheres, and explain why dark matter can't be made out of antimatter.
2021-Sep-20 • 58 minutes
Episode 758: Interview: Dr. Hamsa Padmanabhan, Peering into the Cosmic Dawn
My guest today is Dr. Hamsa Padmanabhan, a cosmologist at the University of Geneva. Dr. Padmanabhan's work involves the investigation of Cosmic Dawn, the period shortly after the beginning of the Universe when the large-scale structure of the cosmos was defined. https://cosmology.unige.ch/use...
2021-Sep-20 • 55 minutes
Episode 757: Interview: Dr. Markus Janson, Starshades for Ground Telescopes
My guest today is Dr. Markus Janson, an astronomy professor at Stockholm University. Dr. Janson and his co-authors have recently published a study investigating if ground-based observatory could use starshades to help directly image exoplanets. https://link.springer.com/a...
2021-Jul-22 • 37 minutes
Episode 755: Q&A 153: How High Can Bacteria Survive? And More...
In the season finale of my questions show, I talk about high-altitude bacteria, traveling into the future, does it make sense to go back to University, and more. See you all in September!
2021-Jul-05 • 33 minutes
Episode 754: Q&A 152: Could We Detect Dyson Swarms? And More...
In this week's questions show, I explain why Dyson Spheres (and Swarms) should actually be pretty easy to detect across the Universe. If it's possible to service the Hubble Space Telescope with a Falcon 9, and will computers take jobs away from astronomers.
2021-Jun-24 • 57 minutes
Episode 753: Interview: Prof. Lee Cronin - Detecting the Chemistry of Life
My guest today is Professor Lee Cronin from the University of Glasgow. Dr. Cronin investigates the chemistry of life and has developed methods that could help us detect it on other worlds - even life as we don't know it.
2021-Jun-24 • 33 minutes
Episode 752: Q&A 151: Would They Warn Us About the End of the World? And More...
In this week's questions show, I explain what would happen if scientists discovered an existential threat to humanity. Would they let us know, or keep it secret to avoid a panic? Could we detect a Breakthrough Starshot fleet coming our way? And how well does China communicate its space exploration to the public?
2021-Jun-16 • 36 minutes
Episode 751: Q&A 150: What is Space Dust, Anyway? And More...
In this week's questions and answer show, I explain how all the dust in space forms, could life be Von Neumann probes, why do people think black holes lead to another universe, and more...
2021-Jun-09 • 36 minutes
Episode 750: Q&A 149: What if a Microscopic Black Hole Passed Through the Earth? And More...
In this week's Q&A, I try to imagine what might happen if a microscopic black hole passed through the Earth. How long will James Webb take to become operational, and what will be the Plan B for James Webb if it fails?
2021-Jun-01 • 35 minutes
Episode 749: Q&A 148: How Do We Know the Age of the Universe? And More...
In this week's episode, I talk about the various ways we measure the age of the Universe. What's next for OSIRIS-REx? And what are the next frontiers for gravitational wave astronomy?
2021-Jun-01 • 61 minutes
Episode 748: Interview: Dr. Casey Handmer, Starship, Space Junk and Settlement
I'm pleased to welcome back Dr. Casey Handmer, a software systems architect at NASA's Jet Propulsion Laboratory. In addition to his work at NASA, Casey has a fascinating blog where he considers the future of human and robotic space exploration:
2021-May-17 • 36 minutes
Episode 747: Q&A 147: The Night Sky at the Center of the Milky Way? And More...
In this week's questions show, I consider what the night sky might look like if you could stand at the center of the Milky Way where the stars are denser. Do all stars have Oort clouds? And could Starship really send humans to Mars for the price of a house?
2021-May-17 • 51 minutes
Episode 746: Interview: Dr. Michael Hecht, Making Oxygen with MOXIE
My guest is Dr. Michael H. Hecht, a research scientist and associate director at MIT's Haystack Observatory. Hecht is also the principal investigator for the Mars Oxygen ISRU Experiment onboard Perseverance:
2021-May-17 • 58 minutes
Episode 745: Interview: Dr. Ken Olum, Boltzmann Brains, Cosmic Strings and Gravitational Waves
My guest is Dr. Ken Olum, a research professor at Tufts University. His primary research is into cosmic strings, and how they could be detectable through techniques like gravitational waves.
2021-May-10 • 45 minutes
Episode 744: Interview: Practical Time Travel with Prof. Ronald Mallet
In this special interview, I was fortunate to speak with Dr. Ronald Mallet, an emeritus professor at UConn. In addition to a lifetime's work in cosmology and astrophysics, Mallet has been trying to work out how our understanding of Einstein's theories of General Relativity might lead to a practical form of time travel.
2021-May-10 • 33 minutes
Episode 743: Q&A 146: Could We Even Comprehend Aliens... as Aliens? And More..
In this week's questions show, I explain why we'd be able to recognize aliens, even if they were vastly more technologically advanced than us. Why I don't do any promotional ads on my videos, and if we have any examples of energy turning into matter.
2021-May-06 • 66 minutes
Episode 742: Interview with Fraser on Demystifying Science
It's time for another interview with me on someone else's podcast. This time it's with Demystifying Science, where we talked about how the lessons of space exploration can help us learn more about conservation and sustainability here on Earth. https://demystifyingscience.com/
2021-May-06 • 39 minutes
Episode 741: Q&A 145: Is Gravity Infinite? And More...
In this week's questions show, I explain whether or not gravity is infinite, will we need to cure cancer to go to space? Will SpaceX help Artemis' chances for landing humans on Mars in 2024, and more...
2021-May-06 • 57 minutes
Episode 740: Interview: Dr. Jessie Christiansen, 2,200 Planets for TESS
My guest is Dr. Jessie Christiansen, an astrophysicist with NASA's Exoplanet Science Institute. Jessie will give us an update on TESS and the 2,200 planets it's discovered so far.
2021-May-06 • 58 minutes
Episode 739: Interview: Dr. Rebecca K. Leane, Detecting Dark Matter
My guest is Dr. Rebecca K. Leane, an astroparticle physicist with the SLAC National Accelerator Laboratory. The work involves innovative ways to detect dark matter.
2021-Apr-26 • 28 minutes
Episode 738: Q&A 144: Are We First in the Universe?
In this week's questions show I explain why we could be first in the Universe, do galaxies flip or spin, did I pick a good career? And more.
2021-Apr-26 • 58 minutes
Episode 736: Interview: Mick West, Identifying UFOs
My guest is Mick West, a game developer and writer. Mick has been studying UFO claims and contrail conspiracy theories for many years and has a useful toolkit to help identify unidentified objects in the sky.
2021-Apr-26 • 59 minutes
Episode 737: Interview: Dr. Klaus Pontoppidan, Choosing Targets for James Webb
My guest is Dr. Klaus Pontoppidan, an astronomer and project scientist working with the James Webb Space Telescope. Klaus is on the committee that helped choose targets that the telescope will be studying once it flys (and it will).
2021-Apr-20 • 30 minutes
Episode 735: Q&A 143: Could Heat on Venus Power a Rover? And More...
In this week's questions show, I explain why a heat-powered rover wouldn't work on Venus. I explain how spacecraft navigate, and wonder what James Webb's Deep Field survey will look like.
2021-Apr-20 • 59 minutes
Episode 734: Interview: Dr. Maggie Lieu, Euclid and the Dark Universe
My guest is astronomer and science communicator Dr. Maggie Lieu. Lieu is a research fellow of machine learning and cosmology at the University of Nottingham and has been working on the upcoming Euclid space mission to help in the search for Dark Energy.
2021-Apr-15 • 59 minutes
Episode 733: Interview: Prof. Geraint Lewis and the Anthropic Principle
Professor Geraint Lewis is an astrophysicist focused on dark energy, gravitational lensing and galactic merger. He has recently published a paper that that investigates the nature of the anthropic principle, how the Universe needs observers.
2021-Apr-15 • 34 minutes
Episode 732: Interview: Dr. Paul Sutter, explaining Muon G-2
You might know Dr. Sutter as a science communicator, but his doctorate is actually in particle physics. Paul is going to join me to talk about the Muon g-2 experiment and what it means for the Standard Model of physics. We'll probably also talk about the end of the EmDrive and other topics in space and astronomy.
2021-Apr-15 • 48 minutes
Episode 731: Interview: Dr. Michio Kaku and the God Equation
Dr. Michio Kaku is a theoretical physicist and science communicator. His new book is called the God Equation, which traces the quest for a single theory of everything that will unite quantum mechanics and the theory of gravity.
2021-Apr-12 • 57 minutes
Episode 730: Interview with Fraser on the Debrief Podcast
This time I was interviewed on the Debrief Podcast. We spend an hour talking about humanity's future in space, the exploration of Mars, and more. Check out their website: https://thedebrief.org/
2021-Apr-12 • 44 minutes
Episode 729: Q&A 142: Do Pulsars Slow Down? And More...
In this week's questions show, I look at the rotation rate of pulsars, why NASA is such a fan of the term in-situ and what our plans are for exploring the Universe.
2021-Apr-09 • 61 minutes
Episode 728: Interview: Oumuamua, Aliens and Astrophysics with Dr. Avi Loeb
Professor Avi Loeb is a theoretical physicist from Harvard who has worked on many advances in space and astrophysics. He helped predict exoplanet discoveries using microlensing, worked on the mathematics for the Event Horizon Telescope, and has many fascinating opinions about the search for extraterrestrials.
2021-Apr-09 • 60 minutes
Episode 727: Interview: Vera Rubin and Time-Domain Astronomy with Dr. James Davenport
My guest is Dr. James Davenport, a research assistant professor at the University of Washington. In addition to his research into magnetically active stars, James focuses on large-scale, time-domain astronomy. He's also a prolific communicator here on YouTube, breaking down complicated scientific topics and documenting astronomy meetings for the general public.
2021-Apr-05 • 39 minutes
Episode 726: Q&A 141: Is It Ethical To Send Humans to Mars? And More...
In this week's questions show, I tackle some challenging questions, like the ethics of sending humans to Mars, and whether it's better to focus on our efforts on Earth or on space exploration. Should we welcome a Carrington Event? Are there any serious competitors to SpaceX in the market right now?
2021-Mar-29 • 37 minutes
Episode 725: Q&A 140: Are the Stars We Can See Special in Any Way? And More...
In this week's questions show, I talk about the stars we can see with our own eyes. Are they special? How long does it take solar flares to reach Earth? How will crimes on Mars be prosecuted?
2021-Mar-22 • 47 minutes
Episode 724: Q&A 139: Could We Give the Moon an Atmosphere? And More...
In this week's questions show, I answer questions about supernovae, how we could terraform the Moon, and why is Starlink so expensive?
2021-Mar-18 • 51 minutes
Episode 723: Q&A 138: When Will Starships Stop Exploding? And More...
In this week's questions show, I talk about how dark matter seems to clump differently from regular matter. When will Starships stop exploding? And what do I think about the Stellina telescope?
2021-Mar-18 • 62 minutes
Episode 722: Interview: Prof. Benjamin Zuckerman on Giant Space Interferometers and Slow Interstellar Exploration
Today I'm interviewing Dr. Benjamin Zuckerman, emeritus professor from UCLA. Zuckerman is the author of over 200 papers, and was involved with the first direct imaging of a multi-planetary system.
2021-Mar-18 • 59 minutes
Episode 721: Interview: Jack Burns and the Lunar FARSIDE Telescope
This week I talk to Dr. Jack Burns, the Principle Investigator for the Lunar FARSIDE telescope. This would be a radio telescope installed on the far side of the Moon that would be capable of observing the first stars and black holes during the Dark Ages and Epoch of Reionization.
2021-Mar-15 • 61 minutes
Episode 720: Interview: Christopher Morrison and the Interstellar Sample Return Mission
This week I talk to Christopher Morrison from USNC about their recently awarded NIAC Grant. Their grant will investigate the feasibility of a radioisotope-electric propelled spacecraft that could intercept and retrieve a sample from a future interstellar asteroid or comet.
2021-Mar-04 • 47 minutes
Episode 719: Q&A 137: What Impressed Me The Most About Perseverance's Landing? And More...
In this week's live questions show, we spend a lot of time talking about the Perseverance landing on Mars. What's happening with my content right now, and is anyone watching the Moon for meteorite impacts?
2021-Mar-02 • 49 minutes
Episode 718: Interview with Fraser on SciManDan Podcast
Here's an interview with me on the SciManDan Podcast. We talked about Perseverance, space conspiracy theories, and much more. Check out the podcast at: https://blubrry.com/thescimandanpodcast/
2021-Feb-23 • 47 minutes
Episode 717: Q&A 136: Should Falcon Heavy Launch the Lunar Gateway? And More...
In this week's questions show, I talk about why some missions go into orbit, and other missions make a direct landing on Mars. Is it a good idea for the SpaceX Falcon Heavy to launch components for the Lunar Gateway? And how can we know if the Universe is finite or infinite?
2021-Feb-16 • 48 minutes
Episode 716: Q&A 135: Where Will We Find Life First? In the Solar System or Another Star?
In this week's questions show, I explain why there are separate challenges for finding life in both the Solar System and in the Milky Way. Can we use water as a propulsion system in space? Will there be interferometer telescopes launched into space?
2021-Feb-09 • 63 minutes
Episode 715: Interview: Chris Prophet, SpaceX From the Ground Up
This week I interview Chris Prophet, the author of "SpaceX from the Ground Up". His book, now in its 6th edition covers the story of SpaceX, from its initial concept to the latest Starship tests.
2021-Feb-08 • 44 minutes
Episode 714: Q&A 134: Could Tethered Starships Provide Artificial Gravity? And More...
In this week's Q&A show, I answer questions about Starship might be able to provide artificial gravity, whether I'd prefer to have LUVOIR or the Overwhelmingly Large Telescope, and if nuclear-powered rockets will work in space.
2021-Feb-01 • 60 minutes
Episode 713: Interview: The Story of the Europa Clipper: "The Mission" with David Brown
In this week's interview, I talk to David Brown about his new book: The Mission. It's all about the campaign to design and build the Europa Clipper mission and everything that happened behind-the-scenes.
2021-Feb-01 • 45 minutes
Episode 712: Q&A 133: What's Causing the Expansion of the Universe? And More...
In this week's QA, I talk about what's driving the expansion of the Universe, how big the observable Universe is to the actual Universe, and what will happen to dogs in gravity.
2021-Jan-23 • 6 minutes
Episode 711: The Universe in Formation. Hubble Sees 6 Examples of Merging Galaxies
Contributing author Matthew Cimone decided to record an audio narration for his article this week on Universe Today. I thought it was a cool idea, so I included it here on the podcast feed. Let me know if you enjoyed it and want to hear more of them.
2021-Jan-23 • 59 minutes
Episode 710: Interview: Robots Made of Ice with Devin Carroll
In this week's interview, I talk with Devin Carroll, a robotics Ph.D. student at the modular robotics lab at the University of Pennsylvania. Devin is working on robots that can build their own structure out of ice.
2021-Jan-20 • 55 minutes
Episode 709: Q&A 132: How Much Of The Universe Could We Ever Explore? And More...
In this week's live Q&A, I talk about the new Space Launch System hot-fire test, how Breakthrough Starshot spacecraft might be able to communicate with home, and what messages would we send to aliens that we might never be able to reach physically.
2021-Jan-14 • 54 minutes
Episode 708: Q&A 131: Can Breakthrough Starshot Slow Down? And More...
Welcome to the new style Q&As, which we're now recording every Monday live on my YouTube channel at 5pm Pacific Time. This week we got a lot of great questions about the Proxima Centauri signal, the Fermi Paradox, and Breakthrough Starshot.
2021-Jan-12 • 60 minutes
Episode 707: Interview: The Story of the Milky Way with Chris Carr
In this week's interview, I talk with Chris Carr, one of the co-hosts in the Weekly Space Hangout. Chris is a grad student at Columbia University, specializing in the cosmos inside and outside the Milky Way.
2020-Dec-24 • 90 minutes
Episode 706: Open Space 100: Did We Really Detect a Signal from Proxima Centauri? And More...
In this week's last QA of 2020, I go long answering questions about space and astronomy. I talk about the news of a radio signal received from Proxima Centauri, an update on my attempts to learn Mandarin Chinese, and a long diatribe about megaconstellations and their impact on astronomy.
2020-Dec-15 • 62 minutes
Episode 705: Open Space 99: Would Alien AI Be Friendly to Us? And More...
In this week's live QA, I answer questions about the source of the Earth's water, what happened to Theia after it collided with the Earth? And can we hope for alien artificial intelligence to be peaceful?
2020-Dec-14 • 61 minutes
Episode 704: Interview: Elizabeth Howell PhD, Canada's Role in Space Exploration
My guest this week is the science journalist Elizabeth Howell. Dr. Howell is one of the most prolific space journalists working in the field, contributing thousands of articles across almost every space news site (including Universe Today). She has also written and collaborated on several books. Her latest book is called "Canadarm and Collaboration", and it's all about Canada's role in spaceflight.
2020-Dec-08 • 62 minutes
Episode 703: Open Space 98: Can White Dwarf Stars Have Habitable Planets? And More...
In this week's live questions show, I explain why planets can remain habitable long after their stars have died, what we're going to do now that Arecibo has collapsed, how we'll explore the oceans underneath Europa. I also answer the question of whether or not I'm ready to learn about the secret Galactic Federation.
2020-Dec-07 • 55 minutes
Episode 702: Interview: Alex Ignatiev and Manufacturing on the Moon
My guest this week is Alex Ignatiev, from Lunar Resources. Alex and his team are working on a rover that could build solar panels, wiring and even radio antennae out of lunar regolith. This could support future bases or even radio telescopes.
2020-Dec-02 • 61 minutes
Episode 701: Open Space 97: What if SagA* Turned into a Quasar? And More...
In this week's live questions show, I explain how amateurs can contribute to space and astronomy research, will I sign up for Starlink, and what would happen if the supermassive black hole at the heart of the Milky Way turned into a quasar?
2020-Nov-26 • 60 minutes
Episode 700: Interview: Wallace Arthur and the Biological Universe
Wallace Arthur is an evolutionary biologist and emeritus professor of Zoology at the National University of Ireland, Galway. His newest book is called the Biological Universe, and features the search for life in the Milky Way and Beyond.
2020-Nov-24 • 61 minutes
Episode 699: Open Space 96: The End of the International Space Station? And More...
In this week's Open Space, we had a series of questions about the International Space Station. How long will it remain in orbit, and what role will it continue to play with other space stations under construction? We also talked about how much longer the Earth will remain habitable, and if it could be possible to replace Arecibo.
2020-Nov-23 • 60 minutes
Episode 698: Open Space 95: Would SpaceX Have Survived without NASA? And More...
In this week's live QA, I talk about how much oxygen we need to survive. Could SpaceX have succeeded without NASA's help? And what's going to happen with Gateway with all the changes to Artemis?
2020-Nov-16 • 61 minutes
Episode 697: Interview: Theoretical Physicist Dr. Peter Woit
Dr. Peter Woit is a theoretical physicist and senior lecturer in the math department at Columbia University. He's a critic of string theory, wrote a book called "Not Even Wrong" and maintains a blog of the same name.
2020-Nov-10 • 60 minutes
Episode 696: Open Space 94: Is It Realistic to Declare a "Free Mars"? And More...
In this week's live QA, I talk about Elon Musk's hope of establishing a free Mars, the future of gravitational wave detectors, and what do I think about trying to live in other places in the Solar System?
2020-Nov-02 • 26 minutes
Episode 695: Q&A 130: Does the Dark Forest Explain the Fermi Paradox? And More...
In this week's questions show, I talk about the Dark Forest theory in the Three-Body Problem series of books. Is it a compelling answer to the Fermi Paradox? How much of a risk is dust to interstellar travel? Is black hole evaporation negated by black holes absorbing additional material and energy?
2020-Oct-27 • 55 minutes
Episode 694: Interview: Fred Watson, Australia's Astronomer at Large
This week my guest is Australian astronomer Fred Watson. He's a writer, researcher and Australia's Astronomer at Large.
2020-Oct-27 • 58 minutes
Episode 693: Open Space 92: Why I Hate Embargoed News Stories, and More...
In this week's live questions show, I talk about the possibility of life on exomoons and why they'll be important targets to search. Why I hate the embargo system for news, and the announcement of water on the Moon.
2020-Oct-22 • 60 minutes
Episode 692: Open Space 91: Any Updates on Venus? And More...
In this week's live QA, I give updates on the discovery of phosphine at Venus, how the Universe could be compressed into a singularity leading to a Big Bang, and more...
2020-Oct-14 • 61 minutes
Episode 691: Interview: Seth Shostak from the SETI Institute
This week I'll be talking Dr. Seth Shostak from the SETI Institute about his work searching the Universe for evidence of extraterrestrials. Check out Seth's podcast at: http://radio.seti.org/
2020-Oct-14 • 30 minutes
Episode 690: The Opposition of Mars with Ralph Crewe
Here's a guest interview I did with Ralph Crewe on his podcast "Isn't That Something" talking about the 2020 Mars Opposition. Check out the podcast at: https://ralphcrewe.podbean.com/
2020-Oct-06 • 61 minutes
Episode 689: Open Space 90: Could We Drill for Life on Mars? And More...
In this week's live questions show, I answer questions about drilling for microbes on Mars, missions that could survive the surface of Venus, and if anyone else is dissatisfied with the Big Bang.
2020-Oct-02 • 13 minutes
Episode 688: Remnants From the Early Universe. Primordial Black Holes
Black holes are already mind-bending enough. Matter and energy compressed into a region so dense that the escape velocity exceeds the speed of light. Places where space and time are tangled up so much that even if you could go faster than light speed, you’d still end up at the singularity. Astronomers know of two kinds of black holes in the Universe: stellar mass and supermassive, and how we get them have been worked out pretty well. But there’s a third class of black hole, one which has never been observ...
2020-Oct-02 • 62 minutes
Episode 687: Open Space 89: Scott Gaudi and the HabEx Mission
This week I'll be talking with astronomer Scott Gaudi from Ohio State University about the search for habitable exoplanets and NASA's HabEx mission.
2020-Sep-28 • 29 minutes
Episode 686: Q&A 129: Did Life Get a Ride to Venus from our Missions? And More...
Did Venus life hitch a ride on the Venera missions? Could we use life to terraform Venus? Life on Venus? Booooring.
2020-Sep-28 • 59 minutes
Episode 685: Open Space 88: UFO Culture with Author Sarah Scoles
Sarah Scoles is a Denver-based science writer who has supplied articles to WIRED Science and Popular Science. Her newest book is called "They Are Already Here: UFO Culture and Why We See Saucers". http://www.sarahscoles.com/
2020-Sep-28 • 58 minutes
Episode 684: Open Space 87: What Would It Take to Terraform Venus, And More...
In this week's live QA, I answer more questions about the discovery of phosphine on Venus, does Russia own Venus? And more...
2020-Sep-17 • 58 minutes
Episode 683: Open Space 86: The Venus Announcement, and More...
It's time for an all new season of Open Space. This is a live QA with Fraser Cain. Obviously, everyone wanted to discuss the discovery of phosphine in the atmosphere of Venus. So we did that as well as talk about the progress of Starship and upcoming missions to Mars.
2020-Sep-17 • 11 minutes
Episode 682: Life on Venus? A Key Biosignature Called Phosphine has been Discovered in Venus' Atmosphere
Well, did you hear the big news? Life on Venus. Life… on... Venus. Now, where have we heard this before? Oh right, life on Mars. If you’ve been watching any of my videos or listening to Astronomy Cast, you’re cautiously optimistic. Skeptical, but hopeful. That’s the right position to take, because buckle up, the internet’s about to run with this news. It’s going to be difficult to figure out what was really discovered, and what this means for the search for life in the Universe.
2020-Sep-14 • 28 minutes
Episode 681: Q&A 128: Which Supernova Created the Solar System? And More... With Astronaut Terry Virts
In this week's questions show, I wonder about the supernova that formed the Solar System, how astronauts deal with air pressure differences, and how we're going to handle the cold temperatures on Mars. Featuring Astronaut Terry Virts https://terryvirts.com/
2020-Sep-10 • 88 minutes
Episode 680: Interview with Fraser on Awesome Astronomy
Here's an interview I did with the Awesome Astronomy podcast. You can see their full podcast here: https://awesomeastronomy.com/ Subscribe to their podcast on iTunes: https://podcasts.apple.com/gb/podcast/awesome-astronomy/id521780589 Or... on Spotify: https://open.spotify.com/show/5Yr24VAoheI0tOUSpVOI2Q...
2020-Sep-08 • 31 minutes
Episode 679: Q&A 127: Does the Simulation Hypothesis Explain the Fermi Paradox? And More...
In this week's questions show, you wondered if the simulation hypothesis is a good answer to the Fermi Paradox. How to get a career in space manufacturing? Will a compass work on Mars? And more...
2020-Jul-30 • 21 minutes
Episode 678: Q&A 126: When Did Mars' Dynamo Shut Off? And More...
In this week's questions show, I consider what the benefits might be to humanity if we discover that we aren't alone in the Universe. How long did Mars planetary dynamo take to turn off? Could we find and repair the lunar rovers?
2020-Jul-24 • 33 minutes
Episode 677: Q&A 125 Can Stars Orbit So Close They're Touching? And More...
In this week's questions show, I explain how it's possible for stars to orbit so closely they're actually touching. What are the limits to gravitational slingshots, and how astronomers know where to point their telescopes in the Universe.
2020-Jul-21 • 10 minutes
Episode 676: Lunar Rovers. From Apollo to Artemis
When the Apollo astronauts first landed on the Moon, they couldn’t go far on foot. That’s why the three final missions were equipped with Lunar Roving Vehicles, or Moon buggies, which allowed the astronauts to cover much more ground and do more science. Now that NASA is returning to the Moon by 2024 as part of its Artemis Program, it’s considering a fleet of new vehicles that will help astronauts roam far and wide across the surface of the Moon.
2020-Jul-20 • 26 minutes
Episode 675: Q&A 124: Are We Even Mentally Capable of Understanding the Universe? And More...
In this week's questions show I explain why it's still important to do science, even if it's difficult, can we use multiple methods to measure distance, and why the Trojan asteroids don't collect into a single object?
2020-Jul-14 • 9 minutes
Episode 674: A Massive Star Just Disappeared. No Supernova, Just Straight to Black Hole
When the largest stars die, it’s usually pretty obvious. Supernovae are visible from billions of light-years away. But recently astronomers watched a massive star just disappear. No explosion, nothing, it just… vanished? Of course, it could have been dust. It’s always dust. But one intriguing possibility is that the star just imploded directly into a black hole, without the supernova detonation. And if that’s the case, is this happening more often, we just didn’t notice it?
2020-Jul-08 • 22 minutes
Episode 673: A New Way to Measure The Expansion of the Universe. The Cosmological Crisis Deepens.
This episode is a segment that we did in the Weekly Space Hangout talking about how astronomers are using masers (water lasers) to measure the expansion rate of the Universe. You'd think that another, independent way to measure the expansion rate of the Universe would be helpful, but it's only deepened the mystery of the cosmological crisis.
2020-Jul-03 • 61 minutes
Episode 672: Open Space 85: Final Open Space Before Hiatus, Live QA with Fraser
This week, it'll be the last Open Space with Fraser before the show goes on its summer hiatus until September. If you've got some burning space questions, no will be your chance to ask them.
2020-Jul-03 • 29 minutes
Episode 671: Q&A 123: What if a Supernova Exploded Beside a Black Hole? And More...
In this week's questions show, I answer what would happen if a supernova exploded right beside a black hole, how do we know that it's impossible to travel faster than the speed of light, can we hitch a ride on an interstellar object, and more...
2020-Jul-03 • 9 minutes
Episode 670: NASA is Considering the Trident Mission. Going Back to Neptune and Triton.
Earlier this year, NASA announced 4 new Discovery-class missions that they were considering. These are low-cost, rapidly-built missions that will help scientists understand some mystery in astronomy and planetary science. One of these missions is called Trident, and it’s going to be targeting the Planet Neptune. And more specifically, it’s going to be providing close up pictures of its largest moon Triton.
2020-Jun-29 • 61 minutes
Episode 669: Interview with Fraser on Space Junk Podcast - Mars is the Worst Place to Live
This is a recent interview with me on the Space Junk, hosted by Tony Darnell and Dustin Gibson about the future of Solar System settlement. Although I'm a huge fan of space exploration in general, I'm not a huge fan of living on other words. Subscribe to Space Junk: https://anchor.fm/spacejunk
2020-Jun-29 • 24 minutes
Episode 668: Q&A 122: How Will We Know It's Alien Life? And More...
In this week's episode, I answer questions about alien life, why the ISS is at its current altitude, and of course, many questions about black holes.
2020-Jun-23 • 61 minutes
Episode 667: Open Space 84: Are Red Dwarf Planets Doomed? Should the Space Shuttle Have Been Built? And More
Another week, another Open Space. In this week's questions show, I talk about planets orbiting red dwarf stars, if planets could steal moons from each other, and whether or not the space shuttle should have ever been built.
2020-Jun-23 • 9 minutes
Episode 666: Two Confirmed Planets at Proxima Centauri. One in the Habitable Zone!
Astronomers have discovered thousands of exoplanets, and still need to confirm thousands more. And over the coming decades, we’ll probably learn of millions of planets, orbiting stars we’ve never heard of. That’s why it’s reassuring to know astronomers are learning a tremendous amount about the closest star system to our own, Proxima Centauri. In fact, we now know of two planets orbiting the red dwarf star, one of which is in the habitable zone.
2020-Jun-22 • 86 minutes
Episode 663: Interview with Fraser on the Interplanetary Podcast
As you know, I sometimes throw interviews with me on the feed. And this is one I did about a week ago on the Interplanetary Podcast. We talk about a range of things in space and astronomy, and my portion shows up around the 30-minute mark. https://www.interplanetary.org.uk...
2020-Jun-22 • 62 minutes
Episode 665: Open Space 83: Dr. Jamie Molaro on Asteroid Bennu and OSIRIS-REx
In this week's episode of Open Space, I talk with Dr. Jamie Molaro, a planetary scientist who helped discover that the surface of asteroid Bennu has rocks that crack because of the constant day/night cycle.
2020-Jun-22 • 59 minutes
Episode 664: Open Space 82: What Will Happen in the Next 5 Decades? And More...
Another week, another Open Space. This week I answer questions about what we might see in the next 5 decades. When dark matter will get debunked, and who will carry the Mars torch after Elon Musk passes away.
2020-Jun-22 • 14 minutes
Episode 662: How Do We Know Black Holes Exist? With Dr Paul Sutter
I’d say half the astronomy-related videos on YouTube are all about black holes. Clearly, they’re a fascinating topic, but they’re also a mystery. How do you observe something that can absorb all the radiation and matter falling onto them, and nothing can ever escape? How do we know they’re really there, and what are the best observations we can make? Today I’m joined by Dr. Paul Sutter, a cosmologist, and astrophysicist to talk about how we know black holes are really there and not just a figment of an ast...
2020-Jun-09 • 26 minutes
Episode 661: Q&A 121: What Stops the Space Station from Re-Entry? And More... Featuring Michael Rodruck
In this week's questions show, I answer questions about how the International Space Station stays above the Earth's atmosphere, does dark matter need a better name? And how do astronomers know they're looking at exoplanets and not sunspots?
2020-Jun-04 • 10 minutes
Episode 660: Crew Dragon Reaches the Station. What it Took to Replace the Space Shuttle
On Sunday, May 31st, 2020, a SpaceX Crew Dragon capsule carrying astronauts Robert Behnken and Douglas Hurley docked with the International Space Station. This was a tremendous accomplishment for SpaceX and NASA, giving the United States the capability of launching its own astronauts, and no longer relying on its Russian partners. This was the 5th time that US astronauts went into orbit on a new kind of space vehicle, following in the footsteps of Mercury, Gemini, Apollo, and the Space Shuttle.
2020-Jun-02 • 60 minutes
Episode 659: Open Space 81: Will Space-Time Freeze in the Far Future? And More...
Another week, another Open Space. This week, I answered questions about whether space-time could freeze, are standard candles like Type 1a supernovae still useful? And is the Great Attractor just a black hole?
2020-May-28 • 60 minutes
Episode 658: Open Space 80: Will We Ever Get Close to the Speed of Light? And More...
In this week's live Open Space, people wanted to know if solar sails really work, will we ever get close to the speed of light, what's the best way to get out of Venus' gravity well, and more?
2020-May-25 • 30 minutes
Episode 657: Q&A 120: Dark Matter Black Holes? And More...
In this week's questions show, I answer whether or not dark matter could become a black hole, how do we know the Universe is flat, and what would happen to the world's market for precious metals once we start mining asteroids?
2020-May-20 • 9 minutes
Episode 656: Searching For Ice In The Moon’s Shadowed Craters
When you’re out in space, water is the most precious resource you can get your hands on. It can be used for air, water, to grow food, radiation shielding, and most importantly, as the propellant for your spacecraft. Exploration of the Moon has revealed that there’s a tremendous amount of water ice locked into the regolith, but it’s probably very difficult to access. But there are also permanently shadowed craters at the Moon’s poles that could have more than enough water to support a permanently inhabitabl...
2020-May-20 • 59 minutes
Episode 655: Open Space 79: How Can Black Holes Have Infinite Density But Not Infinite Gravity? And More...
In this week's live QA, I explain why a black hole can have infinite density but not infinite gravity. Does your perception of time change due to your mass, and am I ever intimidated by the people I get to interview?
2020-May-20 • 58 minutes
Episode 654: Open Space 78: Astronomer Royal Martin Rees on the Future of Humanity
On a special time, we've got a special guest, Professor Martin Rees, a British cosmologist and astrophysicist. He's the Astronomer Royal and helped develop many of the modern theories of astronomy and cosmology.
2020-May-14 • 10 minutes
Episode 653: Catching Interstellar Objects. What If We Could Explore Oumuamua Or 2I/Borisov?
The distances to other stars are depressingly enormous. Sure, it’s incredibly far to get to Mars, Jupiter, and even Pluto, but at least you can design a robotic spacecraft to make the journey and see the science results in your own lifetime. But in the case of other stars, interstellar flight times will take thousands and even tens of thousands of years to send just a robotic mission. Fortunately, the Milky Way has got our back. Other star systems have been hurling comets and asteroids towards the Solar ...
2020-May-14 • 57 minutes
Episode 652: Open Space 77: Moiya McTier
This week's guest is Moiya McTier. You might know Moiya as one of the regular co-hosts on the Weekly Space Hangout. She's an astrophysicist and science communicator, working with Columbia's Cool Worlds Lab.
2020-May-11 • 59 minutes
Episode 651: Open Space 76: What Do I Think About Those UFO Videos? And More...
In this week's live QA, I explain what's happening with Universe Today during the megavirus, what I think about the recently released UFO videos, how aliens could hide their existence, and if Starship will cause a Kessler Syndrome.
2020-May-11 • 10 minutes
Episode 650: Dancing, Flaring Supermassive Black Holes Prove Stephen Hawking's Theory
The Moon orbits around the Earth. The Earth orbits around the Sun. And out in the distant Universe, astronomers have found a system that takes this logical progression to its most extreme. There’s a system where a supermassive black hole with millions of times the mass of the Sun orbits another black hole with billions of times the mass of the Sun. How astronomers discovered this incredible interaction took careful observations, imagination, and the hard work of the Spitzer Space Telescope, taken during i...
2020-May-07 • 60 minutes
Episode 649: Open Space 75: DasValdez from Kerbal Space Academy
This week's guest is DasValdez, a popular Twitch stream who covers all things Kerbal Space Space. Das has carried this love of space exploration and astronomy into the real world, with absolutely fascinating coverage of rocket launches and virtual tours of museums.
2020-Apr-22 • 59 minutes
Episode 648: Open Space 74: Alien Oceans With NASA's Dr. Kevin Peter Hand
This week I'm joined by Dr. Kevin Peter Hand, the Pre-Project Scientist for the Europa Lander mission concept and Director of JPL's Ocean Worlds Lab to talk about the alien oceans located across the Solar System.
2020-Apr-22 • 60 minutes
Episode 647: Open Space 73: Dr. Ryan Watkins, Planetary Science Institute
This week I'll be joined by Dr. Ryan Watkins, a planetary scientist who focuses on exploration of the Moon. She's a member of the Science Advisory Board for the Blue Origin Blue Moon landing program.
2020-Apr-22 • 61 minutes
Episode 646: Open Space 72: Electric Sails with Dr. Pekka Janhunen
Dr. Pekka Janhunen is a researcher with the Finnish Meteorological Institute and the inventor of the Electric Solar Wind Sail concept, using the solar wind as a propulsion system for spacecraft. These could allow spacecraft to explore many regions of the Solar System without any onboard propellant at all.
2020-Apr-07 • 63 minutes
Episode 645: Open Space 71: Scott Manley
In this episode, I was joined by Scott Manley, a developer, player of video games and total space nerd. Scott and I discussed the state of Starship and other events in space exploration.
2020-Apr-07 • 61 minutes
Episode 644: Open Space 70: Professor Brian Keating
Professor Brian Keating returns to Open Space to talk about the big concepts in cosmology, from inflation to the largest scale structures. Dr. Keating was the Principal Investigator of the BICEP2 experiment, and now he's the Director of the Simons Observatory in Chile.
2020-Mar-31 • 63 minutes
Episode 643: Open Space 69: Matt O'Dowd from PBS Space Time
Today I'm joined by Dr. Matt O'Dowd from the successful PBS Space Time YouTube Channel. Matt is an astrophysicist and associate professor in the Physics and Astronomy Department at the Lehman College of the City University of New York.
2020-Mar-31 • 61 minutes
Episode 642: Open Space 68: Dangers and Rewards of Moon Mining with Dr. Phil Metzger
Today I'm joined by Dr. Phil Metzger, a planetary physicist with the Planetary Science faculty at the University of Central Florida. Phil specializes in economic planetary science, helping humanity learn to prosper in space.
2020-Mar-31 • 59 minutes
Episode 641: Open Space 67: Science Communication with Susanna Kohler
Today I'll be joined by Susanna Kohler, an astrophysics Ph.D. and science writer for the American Astronomical Society.
2020-Mar-12 • 28 minutes
Episode 640: Open Space 66: Special Guest Jim Al-Khalili, The World According to Physics
Today I'll be joined by Jim Al-Khalili, a professor of physics at the University of Surrey. He's a well-known science presenter in the UK and has written many books on science and physics. His newest book is "The World According to Physics".
2020-Mar-12 • 10 minutes
Episode 639: Waterworlds. Can There Be Life Without Land?
One of the longstanding questions astronomers have had is, are we normal? Is our Solar System a template for what we might expect to see as we look out into the Milky Way at other star systems? As the data continues to come in, the answer to that question really seems to be no, we’re not normal. Star systems seem to have a huge variety of planets orbiting them. Familiar planets like our own terrestrial, gas and ice worlds. But then there are also super earths, mini-neptunes, hot jupiters. And it looks lik...
2020-Mar-12 • 59 minutes
Episode 638: Open Space 65: Rob Hoyt, Tethers Unlimited
My guest today is Rob Hoyt, the CEO and Chief Scientist of Tethers Unlimited. Founded in 1994, Tethers Unlimited is working on space-based assembly and manufacturing technologies.
2020-Mar-05 • 29 minutes
Episode 637: Q&A 119: Why Should Artemis Bother When We've Got Starship? And More... Featuring Dr. Pamela Gay
In this week's questions show, I explain why we should be excited for both Starship and Artemis. Do we have a cognitive bias when thinking about advanced civilizations? Should humans or robots explore space? And more...
2020-Mar-03 • 60 minutes
Episode 636: Open Space 64: Why Send Humans to Space when Robots are Better? And More..
No guest this week, just a live QA with me. I counsel people on how to be patient when living on Elon Musk time, what is NASA interested in with the Moon, what's the purpose of human space exploration, and more.
2020-Mar-03 • 10 minutes
Episode 635: Japan is Going to Bring a Sample of Phobos Back to Earth. The Martian Moon eXploration Mission
Mars has been the destination for so many of our spacecraft, and for good reason, it’s probably the most Earthlike place in the Solar System, with water ice on its surface and reservoirs of the liquid beneath the surface. If we’re going to find life, Mars might be the place. But the tiny moons orbiting Mars, Phobos and Deimos, are scientifically fascinating on their own, and so far, a mission has never reached them. Last week, Japan announced that they’ve greenlit their Martian Moon eXploration mission, o...
2020-Mar-02 • 59 minutes
Episode 634: Open Space 63: China's Plans for the Moon and More...
No guest this week, just a live QA with me. We talked about what China is up to on the Moon and what comes next. How well have we mapped the surface of the Moon. Why has NASA chosen to build the Artemis mission differently from the Apollo missions, and more...
2020-Mar-02 • 15 minutes
Episode 633: How Will Humans Return to the Moon in 2024? Lunar Lander Options for Artemis
After almost 50 years since the Apollo Moon landing missions ended, NASA announced that they’re going to return to the surface of the Moon with their Artemis mission, ideally taking the first lunar footsteps in 2024. NASA Administrator Jim Bridenstine asked for additional funding to achieve this goal, and the other branches of government haven’t been as enthusiastic about this plan. So don’t be surprised if the landing date slips to 2028 or even farther. But NASA is moving forward on its architecture to r...
2020-Feb-20 • 60 minutes
Episode 632: Open Space 62: Will We Need a Prime Directive in the Future? And More...
In this week's live Q&A, and talk about whether or now we're going to need a Prime Directive in the future like Star Trek, and why aliens might have one already, could life exist on a red dwarf, and if balloons could be used to launch rockets.
2020-Feb-20 • 29 minutes
Episode 631: Q&A 118: Are We In a New Space Race? And More... Featuring Dr Jessie Christiansen
In this week's questions show, I talk about how we're in a new space race, and what this means for returning to the Moon. Of course, lots of follow up answers about the Fermi Paradox. Could Betelgeuse release gravitational waves if it explodes? And what is our responsibility if we are truly alone in the Universe?
2020-Feb-20 • 7 minutes
Episode 630: Betelgeuse Is Still Dimming! And We Have the Pictures to Prove It
Near the end of 2019, astronomers watching the red giant Betelgeuse noted how much the star had dimmed, continuing to steadily fade for months. It’s a variable star, and it’s known to get dimmer and brighter, but the big surprise is that it’s still continuing to dim, recently passing magnitude 1.56 and still getting dimmer. This is unprecedented in the decades that astronomers have been watching the star. The world’s biggest telescopes are on the case, and the European Southern Observatory released drama...
2020-Feb-20 • 10 minutes
Episode 629: Should We Fly to Another Star Soon? Or Wait for Better Technology to Come Along?
It’s hard to really wrap your mind around the vast distances between stars. The fastest spacecraft ever launched into an interstellar trajectory right now is Voyager 1. If it was directed at the nearest star, it would take tens of thousands of years to make the journey across the interstellar gulf. Even so, groups like Breakthrough Starshot and Icarus Interstellar are working on plans right now to try and send spacecraft to other stars, ideally within our lifetimes. But we can see how quickly technology i...
2020-Feb-13 • 28 minutes
Episode 628: Q&A 117: Why Am I So Negative About Aliens? And More... Featuring Dr. Jason Wright
In this week's questions show, I explain why I've got such a skeptical view about the search for aliens if there might be multiple great filters, and why NASA doesn't just go back and use Apollo hardware to return to the Moon?
2020-Feb-13 • 9 minutes
Episode 627: We've Never Seen the Sun's Poles. That's About to Change With Solar Orbiter
On February 9, 2020, the European Space Agency’s Solar Orbiter spacecraft launched from Cape Canaveral Florida on top of an Atlas V 411 spacecraft. The spacecraft’s mission is to fly inside the orbit of Mercury, on a tilted orbit that takes it above and below the Sun, capturing images of the Sun’s poles for the first time. This is just a year and a half after the launch of NASA’s Parker Solar Probe, which will fly even closer. Together, the two spacecraft will measure the Sun from every angle up close, pro...
2020-Feb-11 • 8 minutes
Episode 626: This is the Highest Resolution Image Ever Taken of the Sun
You’re looking at the highest resolution image that has ever been taken of our Sun, using the brand new Daniel K Inouye Solar Telescope in Maui. These lighter regions are convection cells, blobs of hot gas the size of Texas which have carried heat from deep below the surface of the Sun, releasing it into space. The darker lines are cooler regions, where the material is sinking back down into Sun. This image is just a demonstration of the incredible power of this 4-meter observatory, which will join NASA’...
2020-Feb-11 • 26 minutes
Episode 625: Q&A 116: When Will the Cosmic Microwave Fade Away? And More... Featuring James Davenport
In this week's questions show, I answer when the cosmic microwave background will shift into radio waves, what the Sun would sound like if space was filled with air, and limits of our knowledge about planets through simulations.
2020-Feb-04 • 60 minutes
Episode 624: Open Space 61: Do I Think We'll Ever Travel Faster Than Light? And More...
In this week's life Q&A, I explain why we don't send animals to space any more, why I don't think we'll ever travel faster than the speed of light, and how graveyard orbits work.
2020-Feb-04 • 16 minutes
Episode 623: Escape! Spaceflight Abort Systems from the Launch Pad to Interplanetary Travel
On Sunday, January 19th, 2020, SpaceX launched a Falcon 9 rocket carrying its newly designed Crew Dragon spacecraft. 84 seconds into flight, at the moment of maximum aerodynamic pressure, the capsule fired its eight SuperDraco thrusters, detaching from the top of the rocket and flying ahead. Moments after, the Falcon 9 rocket exploded in midair, destroying a completely good rocket, but the capsule was completely safe, jettisoning its trunk and landing gently in the ocean a few minutes later. Nobody was on...
2020-Jan-31 • 10 minutes
Episode 622: Finally! An Explanation for One of the Most Powerful Supernovae Ever Seen
In 2006, astronomers spotted the telltale sign of a supernova detonating in the galaxy NGC 1260, located about 240 million light-years away in the constellation of Perseus. As telescopes around the world turned their collective light-gathering power on the expanding explosion designated as SN 2006gy, they realized they were seeing something very unusual. This clearly wasn’t a regular supernova. It grew to be 100 times brighter than the typical stellar explosion and lasted much much longer. More than a dec...
2020-Jan-30 • 26 minutes
Episode 621: Q&A 115: Could We See a Nuclear Explosion on the Moon? And More... Featuring Dr. Amber Straughn
In this week's questions show, I explain if we'd be able to see a nuclear bomb explode on the Moon, have we already passed the Great Filter, and where we could put DNA to keep it safe in the Solar System.
2020-Jan-28 • 13 minutes
Episode 620: Is There A Shadow Biosphere? Life On Earth That Isn't Related To Us
Whenever I talk about the search for life in the Universe and its emphasis on water, I get comments that scientists aren’t being creative enough. Why does life rely on water? Couldn’t there be lifeforms which are completely different from life on Earth? Isn’t that the textbook definition of alien? Astrobiologists have only scratched the surface in their search for life in the Universe, and they’re going after the low-hanging fruit. Since life on Earth can be found wherever there’s water, why not check out ...
2020-Jan-28 • 60 minutes
Episode 619: Open Space 60: Will Aliens Be Kind Or Cruel?
In this week's questions show, I wonder whether any aliens out there would be nice to us or try to wipe us out. What would be their motivations? Why are planets turning in the wrong direction? Would Betelgeuse generate gravitational waves?
2020-Jan-24 • 15 minutes
Episode 618: The Future Of Gravitational Waves. Seeing Every Black Hole Collision In The Observable Universe?
In 2015, scientists discovered the telltale signal from ripples of spacetime sweeping over the Earth. It was the very first direct detection of gravitational waves, generated by the merger of two massive black holes 1.3 billion light-years away. This discovery was the culmination of decades of research and construction of huge instruments called interferometers to detect the warping of spacetime caused by gravitational waves. Today, the most advanced detectors, the LIGO/VIRGO collaboration, have turned up...
2020-Jan-23 • 31 minutes
Episode 617: Q&A 114: Why Isn't There A Microscope On Mars? And More... Featuring Stella Kafka from AAVSO
In this week's questions show, I explain why it doesn't make sense to send a microscope to Mars, how we could use a black hole to see a reflection of Earth and see dinosaurs, and why we don't just send a solar sail down to the Sun.
2020-Jan-21 • 60 minutes
Episode 616: Open Space 59: Professor Greg Eghigian and the History of UFOs
This week I'm joined by Professor Greg Eghigian, from Penn State University to talk about the history of UFO sightings and claims of alien contact. You can read a recent essay by Dr. Eghigian on Smithsonian's Air and Space Magazine: https://www.airspacemag.com/s... learn more about his work here: https://history.la.psu.edu/directo...
2020-Jan-21 • 12 minutes
Episode 615: The Far Side Of The Moon Is The Perfect Place For a Radio Telescope
We’ve now passed the 50th anniversary of the Apollo 11 landing, and all eyes are back on the Moon. NASA is planning to return to the Moon by 2024 with its Artemis mission, the Chinese have put the Moon firmly in their plans for space exploration, and even SpaceX thinks the Moon is the perfect destination to test out the capabilities of its Starship. But what can you do with the Moon? Refuel spacecraft with resources drawn from the lunar regolith? Mine its helium 3 for your fusion reactors? Build a lunar am...
2020-Jan-17 • 11 minutes
Episode 614: Starlink And Its Impact On Astronomy
On Monday, January 6th, 2020, another SpaceX Falcon 9 blasted off from Cape Canaveral, carrying another 60 Starlink internet communications satellites, bringing the full size of the constellation to 180. With just three launches, SpaceX becomes the largest satellite operator in the world. But the company is just getting started. They’re planning to do this again every couple of weeks during 2020, bringing the total number of satellites in the constellation to about 1440, which is enough to provide high-spe...
2020-Jan-16 • 9 minutes
Episode 613: Q&A 113: Could We Attach Telescopes To Starlink? And More Featuring Jeff Foust
In this week's questions show, I've got another expert guest answerer. Space News reporter and Space Review editor Jeff Foust answers your tricky spaceflight questions. Could we attach telescopes to Starlinks? What impact will these megaconstellations have on astronomy? What can humans do that robots can't? And more...
2020-Jan-14 • 60 minutes
Episode 612: Open Space 58: First Pictures From the New Telescope, And More...
Thanks to our good friends at Oceanside Photo and Telescope, our livestreaming telescope is back online. I featured a couple of quick pics I took with the telescope during a test stream on Twitch Sunday night. I also answered questions about our trip to the AAS in Hawaii, if it's possible to make a more powerful telescope out of smaller telescopes, and why the ISS doesn't have an artificial magnetosphere.
2020-Jan-14 • 24 minutes
Episode 611: Are Aliens Watching Us And How Could We Hide? With Dr. David Kipping
Once again, at the AAS Meeting in Hawaii, I got a chance to sit down with another astronomer to talk about their research. This time it was Dr. David Kipping from Columbia University's Cool World's Lab. We talked about how easy it'll be for aliens to know our planet is inhabited, and some ways we might be able to hide the evidence of our existence.
2020-Jan-11 • 60 minutes
Episode 610: Open Space 57: Could We Terraform Earth To Make It Better? And More...
In this week's Open Space QA, I respond to complaints about my Betelgeuse video, wonder about alien civilizations stuck in heavy gravity, and consider whether we could terraform Earth to make it better.
2020-Jan-11 • 15 minutes
Episode 609: Why Haven't Aliens Settled Every Star In The Milky Way? With Adam Frank
At the American Astronomical Society's meeting Honolulu I got a chance to talk with Adam Frank about new research he's worked with Caleb Scharf, Jonathan Carroll-Nellenback and Jason Wright about the Fermi Paradox. They calculated how difficult it would be for aliens traveling at 10% the speed of light to settle the entire Milky Way, and it turns out, it's not as simple as you might think.
2020-Jan-11 • 19 minutes
Episode 608: Q&A 112: Are Stars Moving The Same Speed And More. Featuring Ethan Siegel
This week's questions show was recorded at the 235th Meeting of the American Astronomical Society in Honolulu, Hawaii. I was lucky enough to have 3,500 astronomers, space scientists and others to talk with. Ethan Siegel from "Starts with a Bang" is back, and this time he's answering your questions about space and astronomy.
2019-Dec-30 • 26 minutes
Episode 607: Q&A 111: Will We Ever Study All The Planets? And More...
In this week's questions show I explain how we'll ever study 100 million planets, what's the business case for space exploration, and how I pull the questions together for these shows.
2019-Dec-27 • 10 minutes
Episode 606: Betelgeuse Is Dimmer Than We've Ever Seen It
Over the last weekend, astronomy Twitter started noting that the red giant Betelgeuse, the prominent shoulder of Orion was looking visibly dimmer in the sky, and I had a few people reach out to me and ask me if it was really happening and if I knew what was going on. This is exciting, of course, because Betelgeuse is living on borrowed time, and it could explode as a supernova any day now. Or, it might not detonate for another 100,000 years. We just don’t know. What’s Betelgeuse up to? Is this a sign that...
2019-Dec-17 • 55 minutes
Episode 605: Open Space 56: SpaceX's Andrew Rader and "Beyond the Known"
This week I'm joined by Andrew Rader, a game designer and mission manager at SpaceX. Andrew's new book is called Beyond the Known and it's all about the history and future of space exploration.
2019-Dec-17 • 12 minutes
Episode 604: 100 Million Exoplanets By 2050? How Will We Get There?
As I’m recording this video near the end of 2019, the total number of confirmed exoplanets stands at 4,104. We’ve come a long way since the discovery of the first exoplanet orbiting a sunlike star back in 1995 with 51 Pegasi b. And the reality is that the race to find new exoplanets is only accelerating. New ground and space-based telescopes are turning up planetary candidates at an increasing rate. New techniques will find planets in entirely new ways. The bottom line is that over the next few decades, th...
2019-Dec-16 • 15 minutes
Episode 603: What Is The Crisis in Cosmology? With Dr. Paul Sutter
How old is the Universe? In order to figure that out, all you have to do is figure out how quickly it’s expanding, and then the clock backward until everything is crunched together. And astronomers have measured the rate that the Universe is expanding with tremendous precision at various times in its history; at the beginning, and much more recently. The problem is, these expansion rates disagree, but they’ve both been measured so accurately that their error bars don’t overlap. In other words, there are m...
2019-Dec-12 • 26 minutes
Episode 602: Q&A 110: Why Can't I Just Be Realistic About Mars? And More...
In this week's questions show, I explain why I don't think we always need to be realistic, if galaxies in the local group are bound together gravitationally, and what we should call Earth-moving equipment on Mars.
2019-Dec-10 • 13 minutes
Episode 601: Living Off The Land On Mars. What Can We Find On The Red Planet?
Extending humanity to other worlds in the Solar System is at the very limits of our modern technology. And unless there are dramatic discoveries in new propulsion systems or we learn how to build everything out of carbon nanotubes, the future of space exploration is going to require living off the land. The technique is known as In-Situ Resource Utilization or ISRU, and it means supplying as much of your mission from local resources as possible. And many of our future exploration destinations, like Mars, ...
2019-Dec-06 • 24 minutes
Episode 600: Q&A 109: Could We Have A Steam Powered Rocket? And More...
In this week's questions show, I explain why you could have a steam-powered rocket, how often spacecraft have crashed into asteroids and comets, and why a red supergiant star actually has a very low surface gravity.
2019-Dec-03 • 12 minutes
Episode 599: Flying In The Cloudtops Of Venus. Balloons, Airships And Airplanes For Venus
The exploration of Venus has been mainly about getting down to the surface of the planet. The Soviet Union sacrificed lander after lander to discover just how extreme the conditions are down there on the ground. But higher up, among the clouds, the climate on Venus is surprisingly Earthlike in temperature and pressure, and there have been some fascinating ideas for robotic and human explorers to fly the skies of Venus, to help understand our evil twin planet. Let’s take a look at them.
2019-Dec-02 • 60 minutes
Episode 598: Open Space 55: Jason Derleth, NASA's Innovative Advanced Concepts
This week I'm joined by Jason Derleth from NASA's Innovative Advanced Concepts (or NIAC). This is a special part of NASA that funds innovative ideas for new telescopes, propulsion systems and rovers. Many of the cool, science-fiction ideas I present on this channel come from research done at NASA.
2019-Nov-29 • 28 minutes
Episode 597: Q&A 108: Why Are There Meteor Showers Every Year? And More, Featuring Paul Geithner from JWST
In this week's questions show, I explain why we can see meteor showers every year, why we're not 3D printing telescopes in space, why there aren't any plans to launch telescopes with SpaceX Starship. And a lengthy answer to one of the most common James Webb questions we get: can it be refueled? This was answered by Paul Geithner, a Deputy Project Manager for James Webb during a recent livestream.
2019-Nov-26 • 61 minutes
Episode 596: Open Space 54: Dr. Casey Handmer On How Starship Changes Everything
We talked about the implications of SpaceX Starship, Starlink, why power beamed from space or asteroid mining will never turn a profit down here on Earth, and why he's not that scared about space radiation.
2019-Nov-26 • 104 minutes
Episode 595: Fraser as Guest on the Skeptic's Guide to the Universe
In case you're interested, I was the special guest rogue for episode 750 of the Skeptic's Guide to the Universe. This long-running science podcast features all kinds of topics relating to science and skepticism. We talked about recent news in space and astronomy as well as the pseudoscience that I run across in my job. If you haven't already, you should definitely subscribe to their podcast, it's one of my favorites. https://www.theskepticsguide...
2019-Nov-26 • 12 minutes
Episode 594: Building Space Telescopes... In Space
When it comes to telescopes, bigger is better. That’s true down here on Earth, and it’s especially true out in space. As astronomers and engineers design the next generation of giant space telescopes, they’re running up against the limits of current launch providers. There are only so many ways you can fold a huge telescope to get it to fit inside a 5-meter launch fairing. The upcoming James Webb Space Telescope is pretty much the very limit of what you can construct on Earth and put into space in a single...
2019-Nov-22 • 25 minutes
Episode 593: Q&A 107: All Your James Webb Questions, Answered
In this week's questions show, I tackle all the questions about James Webb generated by the videos we did this week. Can it be refueled? How can it see the entire sky? Is the delay a blessing? And more...
2019-Nov-21 • 57 minutes
Episode 592: Open Space 53: Live QA with Paul Geithner from James Webb
Today I'll be joined by Paul Geithner, the Deputy Project Manager for NASA's James Webb Space Telescope. You've had questions about this mission. Well... now's your chance to get them answered directly from the source. Paul started working with NASA in 1991 on the Hubble Space Telescope, shifting over to James Webb. In 2011, he became the Deputy Project Manager, Technical for James Webb.
2019-Nov-18 • 21 minutes
Episode 591: The History And Future Of The James Webb Space Telescope
On March 30, 2021, NASA’s James Webb Space Telescope will blast off from the European Space Agency’s European spaceport in Kourou, French Giana on board an Ariane 5 rocket. It’ll fly to the Sun-Earth L2 Lagrange point, a relatively stable spot in space that keeps the glare from the Sun, Earth, and Moon all in a tiny spot in the sky. Then, it’ll unfurl its tennis court-sized sunshade, fold out its gigantic 6.5-meter mirror, and peer out into the distant cosmos. Over the course of the next 10 years, this ...
2019-Nov-18 • 60 minutes
Episode 590: Open Space 52: Dustin Gibson from Oceanside Photo and Telescope
Today's guest is Dustin Gibson from Oceanside Photo and Telescope (OPT). Dustin will talk about his journey to becoming an astrophotographer and eventually running one of the most successful telescope retailers in the world.
2019-Nov-15 • 26 minutes
Episode 589: Q&A 106: Do Geostationary Satellites Reenter The Atmosphere? And More...
In this week's questions show, I answer what will bring geostationary satellites back to Earth, if you could use the heat on Venus to power a rover, why are we so arrogant to believe that life formed only here on Earth, and more.
2019-Nov-08 • 61 minutes
Episode 588: Open Space 51: Where Would I Send A Rover? And More...
It was another solo live QA this week and I did my best to answer as many audience questions as I could do, closing in on 60 questions during the hour. Needless to say it was a wide-ranging conversation with questions about where I think rovers should go, what do I think about time travel, and whether we should do more SETI or build more space telescopes.
2019-Nov-08 • 8 minutes
Episode 587: Why Launch Solar Panels When You Can Print Them Directly In Space? Printing Perovskite Panels
Solar energy is the ideal way to power a spacecraft. There’s no weather, there’s no pesky atmosphere, just pure photons streaming from the Sun to harvest for whatever you need. Well, as long as you’re within the inner Solar System. But solar panels are complicated and fragile made of sensitive electronics and glass - not to mention, really heavy. Any spacecraft equipped with solar panels needs to handle the gravity down here on Earth for the construction and testing, then the shaking and high Gs of launch....
2019-Nov-08 • 28 minutes
Episode 586: Q&A 105: Why Not Send Earth Life to Europa? And More... Featuring Back to Space
In this week's questions show, I tackle questions about seeding Europa with hardy Earth life, what makes galaxies spin, what are we competing with aliens for, and why is it so hard for second stages of rockets to land?
2019-Nov-05 • 12 minutes
Episode 585: Can Life Spread From Star to Star? The Theory of Galactic Panspermia
The race is on to find life in other places in the Solar System, from underground reservoirs on Mars to the subsurface oceans on Europa and Enceladus. If spacecraft, rovers or even astronauts make the momentous discovery of life on another world, that’ll just open up new questions. Did it originate all on its own, completely independently from Earth, or are we somehow related? And if we are related, how long ago did our evolutionary trees branch away from each other. Even though Mars is millions of kilom...
2019-Oct-30 • 13 minutes
Episode 584: Surviving On Venus. Is It Time To Go Back To That Awful Place?
If you’ve watched this channel enough, you might have the impression that I hate Venus. It’s possible, just possible I’ve even suggested that the planet is so terrible it should be pushed into the Sun. The reality, of course, is that it’s an absolutely fascinating world - the closest twin to the Earth that we have in the Solar System. It’s nearly the same mass and has the same surface gravity. While Earth is the beautiful life-filled world we all enjoy, Venus is a tortured hellscape, with temperatures h...
2019-Oct-30 • 11 minutes
Episode 583: A Single Spacecraft Will Visit Seven Asteroids. NASA's Lucy Mission Passes Its Design Review
Scientists have had the opportunity to examine several asteroids in the Solar System now, and what they’ve learned is how much variety is out there, depending on the mass, distance from the Sun and composition. Astronomers currently know of 829,400 asteroids across the Solar System, and they’d love to visit as many of them as possible to learn more about them. Considering the price of a single spacecraft, that’s going to get expensive. Fortunately, there are places in the Solar System that have trapped a...
2019-Oct-30 • 24 minutes
Episode 582: Q&A 104: Should We Reconsider The Definition Of A Moon? And More...
In this week's questions show, I explain why it's probably not time to reconsider the definition of a moon, if we could make artificial gravity with a chunk of a neutron star, and why a supermassive black hole isn't the anchor for an entire galaxy.
2019-Oct-28 • 60 minutes
Episode 581: Open Space 50: When Will There Be Giant Rotating Space Stations? And More...
In this week's live QA, we talked about rotating space stations, the materials that can be made in space, what telescopes and binoculars I use. And there were a lot of questions about James Webb.
2019-Oct-25 • 13 minutes
Episode 580: Is Humanity Prepared To Discover Alien Life?
People always ask me how I think humanity will react if we discover life somewhere out there in the Universe, whether it’s bacteria under the surface of Mars, a biosignature of alien life in the atmosphere of another world, or a radio signal from another civilization. Will our civilization lose its collective mind and have a temper tantrum on a global scale? Will we become one of those purge planets from Rick and Morty? Will the discovery suddenly end all religion, as we wait for guidance from our new al...
2019-Oct-18 • 24 minutes
Episode 579: Q&A 103: How Many Stars Have Zero Planets? And More...
In this week's questions show, I explain why we'll never know which stars have no planets. How we could prevent a catastrophe to Earth, and why aliens might still be a threat to us.
2019-Oct-15 • 61 minutes
Episode 578: Open Space 49: How Can Planets Capture Asteroids? And More...
No guest this week, just a live QA with me and the audience about all things space and astronomy. People had questions about how planets can capture asteroids to turn them into moons, what rocket James Webb will use to fly to space, and why you can't use antimatter to destroy a black hole.
2019-Oct-15 • 13 minutes
Episode 577: AstroClipper: Plans For A Two-Stage, Fully Reusable Spaceplane
Even as the first rockets were launched into space decades ago, aerospace knew it was a wasteful process. Rocket stages, motors, and complex equipment crashed into the ocean or burned up in the Earth’s atmosphere. Could spaceplanes bring the costs down? Flying to orbit with a combination of jet engines and rockets and then safely re-enter the Earth’s atmosphere again. Single-stage to orbit spacecraft and spaceplanes have always seemed out of reach, and actually not that practical. But what about a two-sta...
2019-Oct-11 • 13 minutes
Episode 576: What Comes After LUVOIR? Three Extreme Ideas For Space Telescopes
While we’re all waiting for James Webb to launch - which it will - the Extremely Large Telescope to be constructed, and LUVOIR to get approved. (Please get approved, please get approved.) We’re going to need a way to pass the time. So let’s have our imaginations take flight, out into the Universe, and consider some of the most incredible ideas suggested for telescopes. Unless you’ve been crawling through scientific journals like me, I guarantee you’ve never heard of any of them. But when I’m done, you’r...
2019-Oct-11 • 24 minutes
Episode 575: Q&A 102: Will Starship Cause Global Warming? And More... Featuring Tony Darnell from Deep Astronomy
In this week's questions show, I explain why Starship probably won't contribute to human carbon emissions, if there's a galactic Prime Directive, and if SpaceX has finally perfected the single-stage to orbit. Featuring Tony Darnell from Deep Astronomy and the Space Junk Podcast
2019-Oct-10 • 10 minutes
Episode 574: Venus Could Have Supported Life For Billions Of Years. First Habitable Planet In The Solar System?
After decades of research, including multiple landers and orbiters, science can definitively say: Venus sucks. Seriously, that place is the worst, with its boiling temperature, intense pressure, sulfuric acid rain, and more. But was it always this bad? According to new research from NASA and various universities in Sweden and the US, Venus might have actually been the first habitable world in the Solar System. And it might have maintained a reasonable climate for billions of years, finally rolling over in...
2019-Oct-10 • 61 minutes
Episode 573: Open Space 48: Floating in Darkness with Astronaut Ron Garan
This week I was joined by astronaut Ron Garan to talk about his new book "Floating in Darkness". Ron is an accomplished F-16 pilot, flying combat missions during Desert Shield and Desert Storm. He flew to space twice, first aboard STS-124, and then a six-month stay on board the International Space Station as part of Expedition 27.
2019-Oct-01 • 63 minutes
Episode 572: Open Space 47: Quantum Mechanics With Caltech's Sean Carroll
My guest this week was Professor Sean Carroll from Caltech. Sean's a theoretical physicist, author of many books, and podcaster. His newest book, "Something Deeply Hidden" has just been released, presenting his ideas about the many-worlds interpretation of quantum mechanics.
2019-Oct-01 • 12 minutes
Episode 571: Starship Takes Shape. Are We Months Away From A Fully Reusable Rocket System?
On Saturday, September 28th, SpaceX CEO Elon Musk stood in front of an audience in Boca Chica, Texas, and presented the fully assembled SpaceX Starship, 50 meters tall and made from shiny stainless steel. As part of his presentation, Musk showed off the history of the company’s developments so far and gave us an updated view of what Starship and its first stage Superheavy booster will look like when they’re fully operational. It was actually a pretty short presentation, and there weren’t a lot of details...
2019-Oct-01 • 10 minutes
Episode 570: What Will It Take To Feed A Million People On Mars?
In 2017, Elon Musk laid out his grand sweeping plans for the future of SpaceX, the company that would take humanity to Mars. Over decades, tens of thousands of Starship flights would carry a million human beings to the surface of the Red Planet, the minimum Musk expects it’ll take to create a self-sustaining civilization. The number of details in an effort like this is mind-boggling. What about the reduced gravity, radiation exposure, and space madness? What about return flights? Replacement parts? Buildin...
2019-Sep-27 • 62 minutes
Episode 569: Open Space 46: Dr. Robert Zubrin and the "Case for Space"
One of my most requested guests is Dr. Robert Zubrin, engineer and founder of the Mars Society. It was Dr. Zubrin's "Case for Mars" that helped inspire me to get into space journalism in the first place. We had a wide-ranging interview that updated the Case for Mars, looked at what comes next, and how current efforts are stumbling in their efforts to return humans to the Moon, and then on to Mars.
2019-Sep-26 • 27 minutes
Episode 568: Q&A 101: How Do We Know Meteorites Came From Mars? And More... Featuring Dr. Nick Cowan from McGill
In this week's questions show, I explain how scientists know that meteorites came from Mars, is it dangerous to look for alien civilizations, what citizen science projects to get involved in, and more. Featuring Professor Nick Cowan from McGill University.
2019-Sep-24 • 59 minutes
Episode 567: Open Space 45: Exomoons and the Terrascope with Professor David Kipping
This week I was joined in a live stream with Dr. David Kipping from Columbia University. We had a great interview about his research into exomoons, what new observatories will do for this field. We also talked about his idea of the Terrascope, using the Earth's atmosphere as a lens to study the Universe. And we talked about how scientists can better use the internet to communicate directly with the public about their research.
2019-Sep-23 • 10 minutes
Episode 566: Better Than Earth? Are There Superhabitable Worlds In The Milky Way?
I’ve said many times in the past that the Earth is the best planet in the Universe. No matter where we go, we’ll never find a planet that’s a better home to Earth life than Earth. Of course, that’s because we, and all other Earth life evolved in this environment. Evolution adapted us to this planet, and it’s unlikely we could ever find another planet this good for us. However, is it the best planet? Are there places in the Universe which might have the conditions for more diversity of life?
2019-Sep-19 • 23 minutes
Episode 565: Q&A 100: When Will Earth Be Uninhabitable? And More, Featuring Anton Petrov
In this week's questions show, I explain that life on Earth has less time than you think, if there could be multiple supermassive black holes inside the Milky Way, and what would we see if Mars replaced the Moon. Featuring Anton Petrov from WhatDaMath.
2019-Sep-19 • 58 minutes
Episode 564: Interview with Fraser on the Big Beard Theory
This was an interview with me on the Russian podcast "The Big Beard Theory" with Anton Pozdyakov. We spent an hour talking about my career in space journalism, how I run Universe Today, how I choose stories and how we cover various topics. We also talk about the larger changes I've seen over the course of 20 years of space journalism. The first minute and a half is in Russian, and then it switches to English. https://beardycast.com/podcast/tbbt/th...
2019-Sep-17 • 12 minutes
Episode 563: Want To Explore Mars? Send Humans To The Moons Of Mars First: Phobos And Deimos
Humans to Mars. That’s the plan right? The problem is that sending humans down to the surface of Mars is one of the most complicated and ambitious goals that we can attempt. It’s a huge step to go from low Earth orbit, then lunar landings, and then all the way to Mars, a journey of hundreds of millions of kilometers and 2 years at the least. But there are two places humans can go which are a stepping stone between Earth and Mars. Base camps that would let us gather our resources in relative safety before d...
2019-Sep-17 • 58 minutes
Episode 562: Open Space 44: Astrophotography With Dylan O'Donnell
This week I was joined by Dylan O'Donnell, an incredible astrophotographer and amateur astronomer from Australia. Dylan's photography has been featured in exhibits and websites around the world, and he's the organizer of the Starstuff Conference in Byron Bay (https://starstuff.com.au/) and has a website featuring all his astrophotography (https://deography.com/)
2019-Sep-13 • 8 minutes
Episode 561: Water Vapor Seen In the Atmosphere Of An Exoplanet. It Might Even Be Rain
We’re learning more and more about extrasolar planets, and for the first time, astronomers have discovered water vapor in the atmosphere of a planet orbiting another star. The planet is located in the habitable zone of its star, so this might even be rain. Of course, it’s not all good news, it’s much more massive than Earth, with higher gravity, and is probably bathed in radiation from its red dwarf star. But, it’s a good start in the search for habitable places in the Universe, places where there might be...
2019-Sep-12 • 28 minutes
Episode 560: Q&A 99: Could We Find Life On Venus? And More, Featuring SciManDan
In this week's questions show, I talk about searching for life on Venus, trying to get to orbit with a jet, and why NASA probably shouldn't hire me. This episode features special guest SciManDan.
2019-Sep-10 • 60 minutes
Episode 559: Open Space 43: Welcome to Season 2. Mixing Concrete in Space, And More...
Welcome back to Season 2 of my weekly live QA. Your chance to ask me your questions about space and astronomy... live. Sometimes I'll have guests, and sometimes I won't. This week... I didn't. You wanted to know about recent news about astronauts mixing concrete in space, the formation of craters on Titan, and what might be the difficulties of people going to the Moon or Mars?
2019-Sep-09 • 12 minutes
Episode 558: A Tour Of The Lagrange Points. Part 3 - Trojans and Space Colonies at L4/L5
We’ve reached the third part of our series on Lagrange Points, those stable spots in the Solar System, where you can sort of hover with the minimum amount of fuel. This episode we’re going to look at the L4 and L5 points which share the orbit with a more massive object.
2019-Sep-05 • 25 minutes
Episode 557: Q&A 98: What's The Best Use For The Moon? And More...
In this week's questions show, I explain what I think the best uses of the Moon might be, why I'm qualified to answer questions about space, and if you could use a black hole as mirror that lets you look back in time.
2019-Sep-03 • 17 minutes
Episode 556: A Tour Of The Lagrange Points. Part 2 - Space Telescopes At L2 And Nothing At L3
Lagrange Points. Stable spots in space that you just can’t stop thinking about. What spacecraft work best in which places? What are some amazing ideas that could utilize these regions across the Solar System? In the last episode, I gave an overview of the Lagrange points, and then went into the details of spacecraft missions sent to L1, the perfect place to constantly observe the Sun, the Earth, or to block radiation coming from the Sun. The best place for a lunar elevator, or a spot to put a space station...
2019-Aug-30 • 14 minutes
Episode 555: A Tour Of The Lagrange Points. Part 1 - Past And Future Missions To L1
Thanks to gravity, there are places across the Solar System which are nicely balanced. They’re called Lagrange Points and they give us the perfect vantage points for a range of spacecraft missions, from observing the Sun to studying asteroids, and more. Various spacecraft have already visited Lagrange Points, used them for some or all of their missions, and there are fascinating plans in the works that could put new missions and even space colonies into these balanced places in the Solar System. Let’s exp...
2019-Aug-30 • 24 minutes
Episode 554: Q&A 97: By Request, Here's Our Dog. And Then Some Actual Questions...
In this week's questions show, I introduce Ona, by request. I explain why I don't think going to space is going to fix the big challenges that humanity faces, and how do astronomers figure out how big a planet is?
2019-Aug-28 • 12 minutes
Episode 553: Bringing Mars To Earth. The Plans For a Mars Sample Return Mission
One of the great accomplishments of the Apollo missions was to bring home hundreds of kilograms of lunar rock. Suddenly, geologists had a lifetime’s worth of lunar samples captured from several different spots across the Moon. These rocks and dust have been under continuous analysis since the Apollo 11 astronauts came home over 50 years ago. And they’re still making discoveries. Scientists have samples of the Sun’s solar wind, particles from a comet’s tail, a few grams from an asteroid, with more coming s...
2019-Aug-23 • 12 minutes
Episode 552: A Spacecraft Is Going To Build Its Own Solar Panels In Space: Archinaut One
As I’ve mentioned in several episodes now, humanity is in a bit of a transition period, a time when it makes sense to launch material up and out of Earth’s gravity well into orbit, and beyond. But it’s really expensive, costing up to $10,000 per pound you want in orbit, and 10 times if you want it on the Moon. But over the coming decades, more and more of our space-based infrastructure will be built in space, manufactured out of materials that were mined in space. The only thing that’ll actually need to ...
2019-Aug-22 • 21 minutes
Episode 551: Q&A 96: Why Are Astronomers Finding Such Bizarre Exoplanets? And More...
In this week's questions show, I explain why all the planets astronomers have found are so bizarre. Couldn't we use laser highways to go faster? Is the lunar gateway really a lunar tollbooth?
2019-Aug-20 • 12 minutes
Episode 550: Exploring The Icy Moons of Jupiter. NASA's Europa Clipper and ESA's JUICE
Mars is the place that most of our spacecraft, landers and rovers are studying, searching for any evidence that life ever existed somewhere else in the Solar System. But talk to planetary scientists, and they’re just as excited about the ocean worlds of the Solar System; the moons, asteroids, dwarf planets and Kuiper Belt objects where there could be vast oceans of liquid water under thick shells of ice. The perfect environment for life to thrive. We’ve only had tantalizing hints that these oceans are...
2019-Aug-16 • 12 minutes
Episode 549: Why Build Big Rockets At All? It’s Time For Orbital Refueling
On Tuesday, July 30th, NASA announced 19 different partnerships with 13 different companies to use their expertise to help them develop space technologies, from advanced communications systems to new methods of entry, descent and landing. Instead of contracting out specific projects, NASA will make its employees, facilities, hardware and software available to these companies, for free. One of the most notable of these partnerships will be with SpaceX and NASA’s Glenn and Marshall Centers to help advance t...
2019-Aug-15 • 26 minutes
Episode 548: Q&A 95: Is Techno-Optimism Blinding Us To The Challenges of Space Exploration? And More...
In this week's questions show, I answer if techno optimism is blinding us to the challenges of spaceflight, why there aren't spacecraft at all the planets right now, could the Great Attractor be dark matter? And more...
2019-Aug-12 • 12 minutes
Episode 547: Spacecraft Gyroscopes And Reaction Wheels. You Can Never Have Enough
It’s amazing to think there are telescopes up in space, right now, directing their gaze at distant objects for hours, days and even weeks. Providing a point of view so stable and accurate that we can learn details about galaxies, exoplanets and more. And then, when the time is up, the spacecraft can shift its gaze in another direction. All without the use of fuel. It’s all thanks to the technology of reaction wheels and gyroscopes. Let’s talk about how they work, how they’re different, and how their failu...
2019-Aug-09 • 12 minutes
Episode 546: One Year, Almost 1,000 Planetary Candidates. An Update On TESS
NASA’s Transiting Exoplanet Survey Telescope launched back in April, 2018. After a few months of testing, it was ready to begin mapping the southern sky, searching for planets orbiting stars relatively nearby. We’re just over a year into the mission now, and on July 18th, TESS has shifted its attention to the Northern Hemisphere, continuing the hunt for planets in the northern skies. As part of this shift, NASA has announced a handful of fascinating new planets turned up by TESS, including a couple of wor...
2019-Aug-08 • 23 minutes
Episode 544: Q&A 94: Can Solar Sails Explore The Outer Solar System? And More...
In this week's questions show, I answer a question about solar sails, what geologists might learn from lunar rocks, if Earth could survive inside Jupiter, could gas giants be closer to the Sun, and more.
2019-Aug-05 • 12 minutes
Episode 543: What Are Light Echoes? Using Reflections Of Light To See Even Further Back In Time
When we look outward into space, we’re looking backwards in time. That’s because light moves, at the speed of light. It takes time for the light to reach us. But it gets even stranger than that. Light can be absorbed, reflected, and re-emitted by gas and dust, giving us a second look. They’re called light echoes, and allow astronomers another way to understand the Universe around us.
2019-Aug-02 • 11 minutes
Episode 542: How Habitable Is Titan? NASA Is Sending The Titan Dragonfly Helicopter To Find Out
There are few places in the Solar System which are as fascinating as Saturn’s moon Titan. It’s a world with a thicker atmosphere than Earth. Where it’s so cold that it rains ammonia, forming lakes, rivers and seas. Where water ice forms mountains. Like Europa and Encleadus, Titan could have an interior ocean of liquid water too, a place where there might be life. Titan’s got layers, and fortunately, there’s an awesome new mission in the works to explore it: the Titan Dragonfly mission.
2019-Aug-01 • 33 minutes
Episode 545: Q&A 93: When Will The Space Junk Return To Earth? And More...
In this week's questions show, I explain how long it'll take for space junk to burn up in the Earth's atmosphere, would it be possible to put advertising in space, and why panspermia is appealing as a hypothesis.
2019-Jul-30 • 13 minutes
Episode 541: Why Is The Moon’s South Pole So Important? It’s All About Water
As NASA prepares to return to the Moon by 2024 as part of its Artemis program, the agency is focusing its efforts on exploring the Moon’s polar regions. These are areas of the Moon which seem to have a lot of water mixed in with the regolith. Some of these craters are permanently in shadow, and might still have large quantities of water, that’s accessible to human and robotic explorers. This is a critical resource, and the Moon might be just the place to help humanity as it pushes out to explore the rest o...
2019-Jul-26 • 11 minutes
Episode 540: Planetary Society Deploys LightSail 2’s Solar Sail. What Does The Future Hold For Solar Sails?
Where you can travel in space depends on how much propellant you’ve got on board your rocket and how efficiently you can use it. But there’s a source of free propellant right here in the Solar System - the Sun - which is streaming out photons in all directions. You just need to catch them. And right now, the Planetary Society’s new LightSail 2 spacecraft is testing out just how well it’ll work.
2019-Jul-24 • 31 minutes
Episode 539: Q&A 92: Can We Accelerate At 1G Like In The Expanse? Featuring Sophia Gad-Nasr
In this week's QA, I tackle constant acceleration. Do we have anything that can accelerate at 1G for long periods of time? Why are there different sized stars? And do the heavier elements come from supernovae or colliding neutron stars?
2019-Jul-23 • 10 minutes
Episode 538: Searching For The Red Edge. How The Earth's Forests Are Telling The Aliens Where We Live
People are always worried that alien civilizations will detect the transmissions from our old radio shows and television broadcasts, and send in the invasion fleet. But the reality is that life itself has been broadcasting the existence of life on Earth for 500 million years. Blame it on the plants. In addition to filling the atmosphere with oxygen, plants give off a very specific wavelength visible in infrared radiation. It’s the kind of signal that other civilizations could search for as they’re scanni...
2019-Jul-23 • 11 minutes
Episode 537: Catching The Next Interstellar Asteroid Or Comet. ESA's Comet Interceptor Mission
On October 19th, 2017 astronomers detected the first interstellar asteroid (or maybe comet) passing through the Solar System: Oumuamua. It had a brief encounter with the inner Solar System and then hurtled back out into interstellar space. Once astronomers noticed it, they directed the world’s telescopes on the object, but it was too far away to reveal anything more than a faint dot. Until now, we’ve only been able to study objects in our own Solar System. We have no idea what the rest of the Milky Way ...
2019-Jul-09 • 13 minutes
Episode 536: Q&A 91: Are Space Telescopes A Waste Of Money? And More...
In this week's QA, I answer why space telescopes aren't a waste of taxpayer resources, if ground-based space telescopes will become obsolete, and whether it makes sense to crash phobos into Mars.
2019-Jul-04 • 38 minutes
Episode 535: Fermi Paradox: Where are they? A Debate with John Michael Godier Moderated by Skylias
This past weekend Skylias moderated a debated between John Michael Godier and Fraser Cain over their Fermi paradox theories. If there are aliens where are they? The Fermi paradox theory asks where are the alien civilizations in the galaxy? And in the universe. If they exist. Where are the extraterrestrials?
2019-Jul-03 • 19 minutes
Episode 534: Q&A 90: How Do We Know What The Milky Way Looks Like? And More...
In this week's questions show, I explain how astronomers know what the Milky Way looks like, what would happen in a catastrophic impact on the International Space Station, and who is the team who works with me on Universe Today?
2019-Jul-01 • 12 minutes
Episode 533: Earth To Mars In 100 Days? The Power Of Nuclear Rockets
The Solar System is a really big place, and it takes forever to travel from world to world with traditional chemical rockets. But one technique, developed back in the 1960s might provide a way to dramatically shorten our travel times: nuclear rockets. Of course, launching a rocket powered by radioactive material has its own risks as well. Should we attempt it?
2019-Jun-21 • 19 minutes
Episode 532: Q&A 89: Why Didn't NASA Build More Hubbles? And More...
In this week's questions show, I explain why NASA decided to build James Webb and not more Hubble Space Telescopes, what would happen if you opened up a jar in space, and do we know of any stars without planets?
2019-Jun-18 • 11 minutes
Episode 530: 386: Planetary Protection: What If We Destroy Life Before We Even Find It?
Explorers have always brought stowaways with them on board. Thanks to our travels around the world, hardy creatures like rats, goats, pigs and starlings and more have found their way to every corner of the globe. Not to mention our plants, microbes and viruses. Wherever we go, life goes with us, whether we want it to or not. And when we travel to other worlds, it looks like the most extreme life Earth has ever cooked up is ready and willing to make the journey with us. Now that the big flybys are over, ...
2019-Jun-18 • 62 minutes
Episode 531: Open Space 41: Seeing Jupiter At Opposition, And More...
In this week's penultimate episode of Open Space before our summer hiatus, I give tips and tricks on seeing Jupiter, what's a good starting telescope, updates on LIGO, why rockets launch straight up, and more...
2019-Jun-12 • 60 minutes
Episode 529: Open Space 40: To The Moon By 2024? And More...
In this week's live QA episode, I tackled questions about the reality of returning astronauts to the Moon by 2024, the loss of dark skies, will we ever be able to shop for our own personal spacecraft, and more.
2019-Jun-06 • 22 minutes
Episode 528: Q&A 88: How Could We Cool Down Venus? And More...
In this QA, I explain why only gas giants have rings, if it would be possible to cool down Venus, what would it take to build a generational ships and more...
2019-Jun-04 • 9 minutes
Episode 527: Just How Tough Is Earth Life? Tough Enough To Go Space And Still Thrive
Every time we send a spacecraft to another world, our Earth-based lifeforms are going with us. No matter how well we try to keep them clean, a few stowaways will always come along for the ride. You’d think that years in the cold hard vacuum of space, suffering extreme temperature changes, and receiving brutal doses of radiation would be all it takes to sterilize any life caught on the outside of a lander or rover headed to Mars or Europa. Well, think again. Life just demonstrated that it’s surprisingly re...
2019-May-31 • 22 minutes
Episode 526: Q&A 87: Why Is Starlink So Bright? Is It Right For Starlink To Provide Internet? And More...
In this week's questions show, I give my personal experience of how bright the Starlinks are, and I wonder if companies like SpaceX have the right to provide internet to the planet. Who asked them? Why do people think black holes are so cool? They're scary!
2019-May-28 • 11 minutes
Episode 525: SpaceX Just Launched the First 60 Satellites for Starlink. What About Space Junk?
On Thursday, May 23rd, 2019, SpaceX launched one of its most important payloads in the history of the company - 60 satellites that will begin the constellation of their Starlink internet satellite system.
2019-May-27 • 72 minutes
Episode 524: Space Junk Podcast - Interview with Fraser about the Fermi Paradox and the Great Filter
Tony and Dustin brought me back for round two on the Space Junk Podcast. This time to talk about my favorite topic: The Fermi Paradox. Was I able to convince Dustin that we're probably the only intelligent life in the observable Universe? Subscribe to their podcast at: https://anchor.fm/spacejunk
2019-May-22 • 62 minutes
Episode 523: Interview with Fraser on the SNaQ Podcast
This isn't an interview by me, it's an interview - of me - on the Science News and Questions (SNaQ) podcast from the Carnegie Science Center. Our conversation starts at the 15 minute mark. And if you like the podcast, subscribe at snaq.podbeam.com
2019-May-21 • 9 minutes
Episode 522: 382: Project Artemis: NASA's Plans To Return To The Moon By 2024
On Monday, May 13, 2019, NASA declared: “We are going to the Moon to stay” by 2024. It’s an exciting announcement; the return to a place humans haven’t set foot on in more than 45 years. A serious goal that will test the ability of technology and engineering, as well as the bravery of the men and women who will carry out this task. But we’ve also heard announcements like this before, many times. How will the mission come together? What are the risks? What’s new this time?
2019-May-21 • 61 minutes
Episode 521: Open Space 39: Dennis E. Taylor, author of the Bobiverse Trilogy
This week I was joined by one of my favorite authors, Dennis E. Taylor, the creator of the Bobiverse Trilogy. If you haven't already, I highly recommend you read this series. He was here to talk about what went into the books and his newest book, Outland.
2019-May-20 • 26 minutes
Episode 520: Q&A 86 : Could We Move Atmosphere from Venus to Mars? And More... Featuring Dylan O'Donnell
In this week's questions show, I wonder why there isn't a standard platform for space exploration, if we could move the atmosphere from Venus to Mars, are there L6 and L7 Lagrange Points and more. Featuring guest answerer Dylan O'Donnell.
2019-May-14 • 61 minutes
Episode 519: Open Space 38: Thoughts On Blue Origin/Blue Moon and More...
Again no guest this week. Just you and me. Talking about space. In this week's live QA, people waned to know more information about space construction (09:04), if we could catch a future Oumuamua (11:04) and my thoughts on Blue Origin's Blue Moon strategy (18:07).
2019-May-14 • 8 minutes
Episode 518: 16 Years of Hubble Data In One Incredible Picture. The Hubble Legacy Field
NASA’s Hubble Space Telescope launched on April 24, 1990, and it’s been hard at work ever since, studying the cosmos like no other observatory in human history. Several times in its journey, astronomers have called upon Hubble to study a single spot in the sky for weeks at a time, staring as far as it can, almost to the edge of the observable Universe. These are the deep fields, including the most recent Hubble eXtreme Deep Field. Now all of these data have been mashed together into a single image, span...
2019-May-09 • 19 minutes
Episode 517: QA 85: Am I Optimistic About Humanity? And More...
In this week's questions show, I think about the future of humanity, wonder what would happen if Olympus Mons erupted and how big observatories clean the dust off their telescopes.
2019-May-07 • 62 minutes
Episode 516: Open Space 37: Can The Sun Release A Killer Flare? And More...
I didn't have a guest this week, instead I just answered everyone's questions for an hour. We got through about 40 of them. Questions about the Sun releasing a killer solar flare, capturing asteroids to mine, and if my wife is into space too.
2019-May-07 • 10 minutes
Episode 515: Build Enormous Structures In Space With 3D Printing
When we send anything to space, we have to pay an enormous amount of money. That’s because you need to push satellites, water, astronauts up and out of the Earth’s gravity well. Whether you’re just going to orbit, or heading to the Moon, or out into deep space, it makes the most sense to build your structures in space, out of material that you got from space.
2019-May-04 • 17 minutes
Episode 514: Q&A 84: Is It Cheaper To Build Stuff In Space? And More...
In this week's questions show, I wonder if it's cheaper to build things in space, if the Universe is expanding because it's rolling downhill, and do astronauts fart in space?
2019-May-01 • 9 minutes
Episode 513: 379: LIGO/Virgo Upgraded. A Black Hole Merger Every Week?
Notice that you haven’t been hearing much about black holes crashing into each other recently? That’s because the world’s most sensitive gravitational wave hunters have been offline for the last year. Well, they're back now, with enough upgrades that they should be capable of finding a black hole merger every week, not to mention more colliding neutron stars, and maybe, just maybe, black holes eating neutron stars.
2019-Apr-30 • 61 minutes
Episode 512: Open Space 36: Live QA with Meteorite Man Geoff Notkin
This week's guest is Geoff Notkin, the host of TV's Meteorite Men. He was recently elected to be the President of the National Space Society. http://www.geoffnotkin.com/
2019-Apr-29 • 9 minutes
Episode 511: Where Will the Voyagers Go Next?
NASA’s Voyager spacecraft are traveling on an escape trajectory from the Sun, and are now on a journey that will take them through the outer reaches of the Solar System and out into the Milky Way Galaxy.
2019-Apr-22 • 61 minutes
Episode 510: Open Space 35: Live QA with Gizmodo's George Dvorsky
This week, my guest will be science writer and futurist George Dvorsky, from Gizmodo and io9.
2019-Apr-15 • 60 minutes
Episode 509: Open Space 34: Live QA with Guest: Chad Weber
Today I'm joined by Chad Weber, the video editor for the Guide to Space and other videos we do here on Universe Today. Chad was also the audio editor for Astronomy Cast and other Astrosphere projects.
2019-Apr-15 • 24 minutes
Episode 508: QA 83: New Planets Around Dead Stars? Featuring Dr. Sabine Hossenfelder
In this week's questions show, I wonder if planets could form from the wreckage around dead stars, who don't all stars collapse immediately into black holes, and where did my new channel pic come from?
2019-Apr-10 • 8 minutes
Episode 507: 377 - It's Finally Here! The First Image Of A Black Hole
All that waiting has paid off. Here it is, the first ever image of a black hole.
2019-Apr-09 • 17 minutes
Episode 506: 376 - The New Planet Hunters. Who Will Find Earth 2.0?
We now know of thousands of confirmed exoplanets, with many more candidates. And there are now dozens of planet hunting telescopes on Earth and in space, using a range of techniques to find tens of thousands more. There’s a new class of instruments and missions in the works that’ll give us an incredible understanding about the planets orbiting other stars. One of these will be the one to find Earth 2.0.
2019-Apr-08 • 60 minutes
Episode 505: Open Space 33: Live QA with Dr. Brian Keating (Losing the Nobel Prize)
My guest today will be Dr. Brian Keating, a professor of physics and the author of the recent book "Losing the Nobel Prize". Brian was on the BICEP2 team that announced the discovery of primordial gravitational waves; a discovery that turned out to be dust.
2019-Apr-03 • 24 minutes
Episode 504: QA 82: Could There Be Galactic Panspermia? And More...
In this QA episode, I wonder if there could be a galactic panspermia, why I'm always stealing articles from Fraser Cain from Universe Today, and where the Universe came from.
2019-Apr-01 • 61 minutes
Episode 503: Open Space 32: Live QA with Dr. Ian O'Neill
My guest today will be Dr. Ian O'Neill. Ian is an astrophysicist and journalist, and has been covering space and astronomy news for more than a decade.
2019-Mar-25 • 62 minutes
Episode 502: Open Space 31: The Cosma Hypothesis with Frank White
This week I'm joined by Frank White, author of the Overview Effect. His new book is the Cosma Hypothesis, which talks about humanity's role in the larger cosmos.
2019-Mar-25 • 11 minutes
Episode 501: 374: Soaring Above Mars. Airplanes, Helicopters and Balloons on the Red Planet
Aircraft make some of the best platforms for science here on Earth. From weather balloons to study the high atmosphere to aircraft that fly into the hearts of hurricanes. From surveys of Antarctic ice sheets to drones.
2019-Mar-24 • 29 minutes
Episode 500: QA 81: Did Life Evolve Only Once? And More... Featuring Science Mom
In this week's QA, we discuss infecting Mars with diarrhea, if life evolved more than once, and why other countries don't help explore space.
2019-Mar-20 • 12 minutes
Episode 499: 374: The Incredible Challenge of Landing Heavy Payloads On Mars
It’s too bad Mars is such an interesting place, because it’s actually one of the most difficult places to visit in the Solar System, especially if you want to bring along a lot of luggage. That planet is a graveyard of missions that didn’t quite make it.
2019-Mar-18 • 61 minutes
Episode 498: Open Space 30: Searching for Exoplanets with Dr. Jessie Christiansen
This week's guest is Dr. Jessie Christiansen, aka the Aussie Astronomer. Jessie is an exoplanet researcher working at NASA's Exoplanet Science Institute at Caltech. We'll talk all things exoplanets.
2019-Mar-12 • 72 minutes
Episode 497: Space Junk Podcast: Conspiracy Theories With Fraser Cain
I was a guest on the Space Junk Podcast from Oceanside Photo and Telescope. Subscribe to their podcast! When it comes to end of the world theories, NASA conspiracies or astronomy hoaxes Fraser has seen or heard them all. This episode picks apart those ideas and we talk about whether anything should or could be done to combat them.
2019-Feb-26 • 63 minutes
Episode 496: Open Space 29: Existential Risks with Phil Torres
My guest today is Phil Torres, author, journalist and the founder of the X-Risks Institute. He tracks the ways the world could end. He's the author of Morality, Foresight and Human Florishing. An Introduction to Existential Risks
2019-Feb-25 • 27 minutes
Episode 495: QA 80: Does Everything Orbit Something? And More Featuring Dr. Becky
In this week's QA, I answer if Opportunity could ever phone home, are there stars between galaxies, and who, exactly, is Chad? Featuring a special guest answer from Dr. Becky.
2019-Feb-25 • 61 minutes
Episode 494: Open Space 28: Live QA with Dr. Morgan Rehnberg
This week I'm joined by Dr. Morgan Rehnberg. Morgan is a planetary scientist, scriptwriter for SciShow Space, and of course, one of the co-hosts of the Weekly Space Hangout.
2019-Feb-20 • 13 minutes
Episode 493: 373 - Farewell Opportunity. A History Of The Mars Exploration Rovers
Today I wanted to look back at the history of the Mars Exploration Rovers, Spirit and Opportunity. To take you through their creation, launch to Mars, the amazing discoveries they made, and of course, how they finally died.
2019-Feb-18 • 62 minutes
Episode 492: Open Space 27: Live QA with Dr. Kimberly Cartier
Dr. Kimberly Cartier is an exoplanet researcher, reporter for Eos Magazine and one of my co-hosts with the Weekly Space Hangout. Join us for a conversation about space, astronomy and the search for extrasolar planets.
2019-Feb-14 • 29 minutes
Episode 491: QA 79: Galactic Prime Directive Keeping Us In The Dark? And More... Featuring Ryan Macdonald
In this week's questions show, I explain why SLS is still happening, if we can rule out contamination when we finally find life, and wonder why China is sending spacecraft to the Moon.
2019-Feb-11 • 64 minutes
Episode 490: Open Space 26 - Live QA, Searching for Technosignatures with Dr. Jason Wright
Today Fraser is joined by exoplanet researcher Dr. Jason Wright from Penn State University. In addition to the more traditional hunt for exoplanets, Jason is helping define the search for extraterrestrials using all the new techniques available to astronomers.
2019-Feb-06 • 28 minutes
Episode 489: QA 78: Why Use Crew Dragon AND Starliner? And More, Featuring Everyday Astronaut
In this week's QA, I wonder if there were other bombardments, how the Earth could have been oxygen rich, and why the asteroid belt isn't a planet. With a special guest answer from Tim Dodd, the Everyday Astronaut.
2019-Feb-04 • 11 minutes
Episode 488: 372: Dark Energy Seems To Be Changing Over Time. Leading To A Big Rip?
Astronomers working with the NASA’s Chandra X-Ray Observatory and ESA’s XMM-Newton have developed a technique to watch quasars and track the expansion of the Universe over the last 9 billion years. What they found is that the mysterious dark energy that’s currently accelerating the expansion of the Universe doesn’t appear to be a fixed amount. It’s changing, and appears to be increasing over time. If true, it’s a groundbreaking discovery in cosmology, and it could just fortel the end of the Universe.
2019-Feb-04 • 63 minutes
Episode 487: Open Space 25 - Amateur Astronomy with Dean Regas
Today I hang out with astronomer Dean Regas, author with the Cincinnati Observatory and author of 100 Things to See in the Night Sky.
2019-Feb-02 • 8 minutes
Episode 486: 371: Oldest Rock From Earth Was Found On The Moon (Of All Places)
Geologists think they’ve found the oldest Earth rock ever seen. And they found it in one of the last places you’d ever suspect, on the Moon. When the Apollo 14 astronauts returned their lunar samples back to Earth, they were carrying one rock that had formed on Earth 4 to 4.1 billion years ago, which was carved out of our planet during the time of intense bombardment and delivered to the Moon.
2019-Jan-30 • 30 minutes
Episode 485: QA77: Constant Acceleration For Artificial Gravity? And More... Featuring Astroathens
In this week's Questions Show, I wonder if there's a way ion engines can give us artificial gravity, if electromagnetic rail guns can launch space craft, and should we be worried about returning alien pathogens back to Earth?
2019-Jan-29 • 61 minutes
Episode 484: Open Space 24 - Going The Speed of Light With Dr. Paul Sutter
Today I hang out with astrophysicist Dr. Paul Sutter to talk about space and his new book, Your Place in the Universe.
2019-Jan-23 • 9 minutes
Episode 483: 370: Can There Be Life On Planets Around Red Dwarf Stars?
As astronomers find more and more planets around other stars, the big question we want to know is: are they habitable, could there be life there?
2019-Jan-22 • 25 minutes
Episode 482: QA 76: Can You Come To A Dead Stop In Space? And More... Featuring Launch Pad Astronomy
In this week's QA, I answer if it's possible to come to a dead stop, will Mars be more habitable when the Sun expands as a red giant, is there a stellar mass black hole nearby, and more...
2019-Jan-21 • 61 minutes
Episode 481: Open Space 23 - Space and Futurism With Isaac Arthur
In this week's live QA, I sit down with Isaac Arthur. He talks about the challenges of futurism, how he creates so much amazing content, and a new suggestion for the Prime Directive: Don't Be a Jerk.
2019-Jan-17 • 10 minutes
Episode 480: 369: Many New Fast Radio Bursts Found, Including Another Repeater
One of the big mysteries in astronomy is unfolding right before our eyes: fast radio bursts. And now a new Canadian radio telescope has come online, detecting many new bursts, including the second ever seen repeating.
2019-Jan-15 • 25 minutes
Episode 479: QA 75: Have We Already Infected Mars with Bacteria? And More...
In this week's questions show, I wonder if we've already infected Mars with our Earth life, why we assume aliens build Dyson Spheres, and if you could link up 5 Hubble telescopes together.
2019-Jan-15 • 61 minutes
Episode 478: Open Space 22: Photonic Propusion, Canada in Space, Big or Small Rockets, and More...
This week's Live QA was just me, no guest. Which gave us lots of time to get into your questions. We talked about photonic propulsion systems, the future of small rockets and whether space elevators will work better on the Moon or Mars.
2019-Jan-10 • 12 minutes
Episode 477: 368: Searching for Technosignatures. Evidence of Intelligent Alien Civilizations
Are we alone in the Universe? It’s one of the most difficult and important questions that humanity can ask. As Arthur C. Clarke noted, it’s equally terrifying whether the answer is yes or no.
2019-Jan-08 • 23 minutes
Episode 476: QA 74: Can We Be Ready for the Next Oumuamua? And More...
In this week's questions show, I wonder what we'd do if we actually found life, if we can be ready for the next interstellar asteroid, why the Mars 2020 rover is going to help with sample return and more.
2019-Jan-07 • 62 minutes
Episode 475: Open Space 21: Live QA with John Michael Godier
This week I'm joined by sci-fi author and science writer John Michael Godier. We talk about the latest space news and what's happening with John's new Event Horizon Channel.
2019-Jan-06 • 11 minutes
Episode 474: 367: Project Dragonfly. A Laser-Powered Probe to Alpha Centauri
The distances between stars are so vast, it’s hard to wrap your mind around it. Even our far flung Voyagers have barely reached interstellar space, and would take tens of thousands of years to get to even the nearest star. But scientists and engineers are considering what it would actually take to send a spacecraft to another star. It’s called Project Dragonfly, and would use existing or near future technologies to send a 3,000 kg spacecraft to Alpha Centauri within 100 years.
2019-Jan-01 • 21 minutes
Episode 473: QA 73: Is SETI Pointless? And More...
In this week's questions show, I wonder if moons could be geostationary, if we could detect Hawking radiation, if SETI is pointless, and why I'm always talking to people like they're 11. as the Sun. In fact, this star is a virtual twin of the Sun and it’s actually pretty close. Well, astronomical speaking.
2018-Nov-29 • 9 minutes
Episode 472: 366: One of the Sun's Sibling Stars Has Been Found. And It's Actually Pretty Close
Thanks to the hardworking Gaia spacecraft, astronomers think they’ve located a star that formed from the same solar nebula as the Sun. In fact, this star is a virtual twin of the Sun and it’s actually pretty close. Well, astronomical speaking.
2018-Nov-22 • 24 minutes
Episode 471: QA 72: Escaping an Extinction Event and More...
In this week's questions show, I wonder how well we'll be able to survive various extinction scenarios, can mobile apps help you learn the night sky? What would we do if Tunguska happened today? And more...
2018-Nov-19 • 11 minutes
Episode 470: 365: Is Oumuamua a Solar Sail Spacecraft from Another Star? Probably Not
It’s been about a year since the mysterious interstellar asteroid (or maybe comet) Oumuamua passed through our Solar System. It was going so fast and was so far away that astronomers could see very little before it was off and away into deep space again.
2018-Nov-12 • 16 minutes
Episode 469: QA71: Could We React to An Incoming Asteroid? And More...
In this week's questions show, I wonder if we'll have enough time to respond to an asteroid or comet, if we're going to fill the asteroid belt with space junk and if antimatter engines are the best way to explore space.
2018-Oct-24 • 13 minutes
Episode 468: 364: The Search for Neutrinos. Catching These Elusive Particles in a Gigaton of Ice
In the pristine icy environment of Antarctica, there’s a telescope, embedded into an ancient glacier. The telescope is observing the Universe, directly through the Earth, using a cubic kilometer of ice to capture elusive particles called neutrinos.
2018-Oct-01 • 25 minutes
Episode 467: QA 70: What is Space Itself? And More Featuring Dr. Paul Sutter
We recorded this week's episode of the QA show from inside the Carnival Magic cruise ship, as part of our summer Astrotour. I saved up a bunch of tough questions for Dr. Paul Sutter, including: what is space itself? Could we use negative mass to destroy black holes? What would you see falling into a black hole, and more...
2018-Oct-01 • 60 minutes
Episode 466: Open Space 20: Live QA with Casey Dreier from the Planetary Society
Casey Dreier is the Planetary Society's Director of Space Policy, helping to advocate for planetary science with the US government. He's probably the best person I know to talk about the state of US space policy and the future of crewed and robotic spaceflight.
2018-Sep-21 • 32 minutes
Episode 465: QA 69: Can We Detect Random Particles With The LHC? And More With Dr. Pamela Gay
We recorded this episode of the QA live in front of a real audience as part of our Astronomy Cast 500 celebration. I took some rough questions and threw them at Pamela Gay, my co-host in Astronomy Cast. Will the Large Hadron Collider randomly detect particles passing through it? and more.
2018-Sep-20 • 12 minutes
Episode 464: 363: A Return Mission to Pluto? This Time to Stay
New Horizons gave us the best views we could have hoped for of Pluto. But it was only a single glimpse of half the world. What's New Horizons up to next? And what plans are in the works to return to Pluto and Charon?
2018-Sep-12 • 23 minutes
Episode 463: QA 68: What If It's Really a Vast Government Conspiracy? And More...
In this week's questions show, I explain how I'd react if it turned out the government was hiding evidence of aliens. How we communicate with Mars when it goes behind the Sun, and why we should bother building space telescopes any more.
2018-Sep-10 • 62 minutes
Episode 462: Open Space 19: QA with Anton Petrov. Surf a Gravitational Wave, Building Sea Dragon and More...
For tonight's live QA, I'll be joined by Anton Petrov, a math and science teacher who talks about space and astronomy on his YouTube channel, often simulating events in Universe Sandbox to show how they work.
2018-Aug-30 • 16 minutes
Episode 461: 362: How Are We Searching For Dark Matter? And How Do We Even Know It’s Real?
Whenever I mention dark matter in anyway in the Guide to Space, or in a questions show, I get a bunch of responses that have essentially the same point. Astronomers are just speculating, why do they even think dark matter is a thing?
2018-Aug-27 • 60 minutes
Episode 460: Open Space 18: When Will Betelgeuse Go Supernova? And more...
In this week's live QA, I answer questions about when Betelgeuse will go supernova, how bad are the fires here in British Columbia, and which planets I'd like us to send probes to.
2018-Aug-22 • 18 minutes
Episode 459: QA 67: Is Anywhere Else Perfectly Habitable? And More... Featuring Dr. Sabine Hossenfelder
In this week's questions show, I explain why we don't know of any perfectly habitable worlds in the galaxy. Why we don't know if the Universe is finite or infinite, and why we call it "micro gravity" and not "zero gravity".
2018-Aug-20 • 59 minutes
Episode 458: Open Space 17: Live QA with Fraser
No guests this time, just a live QA with Fraser.
2018-Aug-16 • 11 minutes
Episode 457: 361: Making the Atmosphere Disappear. The Power of Adaptive Optics
The Earth’s atmosphere keeps us safe from the harsh environment of space, but it also obscures our view into the cosmos. No matter how powerful a telescope you build, the turbulence of the atmosphere limits your resolution. But astronomers and engineers have an amazing technology that allows a telescope to peer into space as if the atmosphere isn’t even there, producing images from here on the ground which are as sharp and clear as if the telescope was out in space. It’s called adaptive optics, and we’re no...
2018-Aug-14 • 24 minutes
Episode 456: QA 66: What If SpaceX Went Bankrupt? and More...
In this week's questions show, I wonder what would happen if SpaceX failed as a company, why New Horizons can't search for Planet 9, and I ask for your suggestions for new names to call dark matter and dark energy.
2018-Aug-13 • 62 minutes
Episode 455: Open Space 16: Live QA with Professor Avi Loeb, Breakthrough Starshot
Professor Avi Loeb is one of the hardest working astrophysicists in the field, writing a blistering number of academic papers on fascinating topics like the Fermi Paradox, the habitability of other worlds, black holes, and the history of the early universe. He's also one of the people working on the Breakthrough Starshot project to send tiny probes to other star systems.
2018-Aug-06 • 59 minutes
Episode 454: Open Space 15: Live QA with David Brin
On this week's live QA, I got a chance to talk with David Brin, a science fiction author, futurist, and an advisor for NASA's Innovative Advanced Concepts awards. David and I talked about the Transparent Society, why we should go to asteroids before the Moon or Mars, and some cool ideas coming out of NIAC.
2018-Jul-30 • 59 minutes
Episode 453: Open Space 14: Prof. Brad Peterson and LUVOIR
This week Professor Brad Peterson joins me to talk about the capability of the LUVOIR telescope, which is one of the next generation space telescopes NASA is considering as part of its new Decadal Survey.
2018-Jul-25 • 23 minutes
Episode 452: QA 65: Is Dark Matter Really Real? And More
In this week's QA, I explain why dark matter is really a thing, and not just some made up thing by evil astronomers. How event horizons flatten out when they spin, what kind of scientist I'd want to be, and if you could build a ladder to space.
2018-Jul-23 • 59 minutes
Episode 451: Open Space 13: Live QA with Fraser Cain
Just me again, back from Australia answering live questions about the Universe.
2018-Jul-14 • 9 minutes
Episode 450: 360 - Missing Baryonic Mass in the Universe... Found!
Astronomers have finally solved one of the outstanding mysteries in cosmology. Forget about all the dark matter and dark energy, where’s all the missing regular mass in the Universe? This has been called the “missing baryon problem”.
2018-Jul-12 • 20 minutes
Episode 449: QA 64: What If The Milky Way Lost Its Black Hole? And More...
In this week's question's show, I answer what would happen if the Milky Way lost its supermassive black hole, why can't you spiral stuff into the Sun, why do we assume life breathes oxygen?
2018-Jul-11 • 11 minutes
Episode 448: 359 - Space Navigation. Finding Your Way in the Cosmos
Until we learned to properly navigate our way across the oceans, early explorers were fearful to lose sight of land in case they’d be lost at sea. They learned to use the water currents, winds, movements of birds and of course, the positions of the Sun, the Moon and the stars to find their way across the seas to distant lands. As we learned to launch spacecraft into orbit and out into the Solar System, mission planners needed to develop entirely new methods of navigation.
2018-Jul-06 • 20 minutes
Episode 447: QA 63: Why Can't We Find Planet 9? And More...
In this week's episode, I explain why you can't just calculate the position of Planet 9, why we don't use parachutes to retrieve boosters, and if we can wait 100 million years to see the Great Attractor.
2018-Jul-04 • 6 minutes
Episode 446: First Ever Picture of a Baby Planet!
For the first time ever, astronomers have captured a direct image of a newly forming planet orbiting around a newly forming star. It’s a stunning photograph, not only for the science and what was observed, but what it means the future of exoplanetary astronomy.
2018-Jul-02 • 59 minutes
Episode 445: OpenSpace 12 - Live QA with Fraser
Live QA with just Fraser this week.
2018-Jun-29 • 15 minutes
Episode 444: 357 - Harvesting Resources From The Solar System. In Situ Resource Utilization
Rocket launches are expensive. Even with huge price drops from SpaceX and other New Space companies, there’s no cheap way to get stuff down here in Earth’s gravity well up to low Earth orbit. In order to really survive and thrive in space, we’ve got to learn to live off the land, to acquire the resources in space that will allow us to survive… in space. We’ve got to learn to turn those raw materials into forms we need: fuel, breathable air, water, construction materials, and eventually even finished goods l...
2018-Jun-26 • 21 minutes
Episode 443: QA 62: Can We Build A Space Internet and More...
In this week's questions show, I answer if it's a good idea to build a space internet, if microbes reach Mars, will they evolve into something new, where could we go after Mars, and more.
2018-Jun-24 • 61 minutes
Episode 442: Open Space 11: Live QA with Dr. Pamela Gay
This week I'm joined by my Astronomy Cast co-host Dr. Pamela Gay to talk about all things astronomy, and casting.
2018-Jun-20 • 17 minutes
Episode 441: QA 61: Could Jupiter Be a Gravity Lens? and More...
In this week's QA, I present real pictures of the whole Earth, not some fake CGI, and wonder if Jupiter could be used as a gravitational lens for a space telescope.
2018-Jun-18 • 61 minutes
Episode 440: Open Space 10: Live QA with Fraser, Space Force and More...
In this week's live QA, I was solo again, answering live questions from the audience about Trump's ongoing plans to build a Space Force.
2018-Jun-14 • 27 minutes
Episode 439: QA 60: How Do We Know Where Gravitational Waves Come From? And More...
In this week's questions show, I explain how we now where gravitational waves are coming from, will there be planets around a white dwarf, what does it feel like where the space station is getting boosted, and if I'm an arrogant fool.
2018-Jun-12 • 15 minutes
Episode 438: 356: What Comes After James Webb and WFIRST? Four Amazing Future Space Telescopes
The Hubble Space Telescope has been in space for 28 years, producing some of the most beautiful and scientifically important images of the cosmos that humanity has ever taken. But let’s face it, Hubble is getting old, and it probably won’t be with us for too much longer.
2018-Jun-11 • 63 minutes
Episode 437: Open Space 9: Radio Astronomer Dr. Nicole Gugliucci
This week, it's a live QA with radio astronomer Dr. Nicole Gugliucci to talk about radio telescopes, and how close the movie Contact is to reality.
2018-Jun-08 • 13 minutes
Episode 436: 355: The Problem of Power in Space. NASA's New Kilopower Reactor
Space is the worst. It’s got hostile radiation, a total lack of atmosphere, near absolute zero temperatures, problematic gravity wells, and worse. In order to keep your spacecraft alive in that environment, you need electricity to keep it warm. Not to mention all the power to run scientific instruments and the transmitters to send that data home. Getting enough power in space is a big problem.
2018-Jun-06 • 21 minutes
Episode 435: QA 59: Why Does the Deep Future Make Us Sad? And More...
In this week's questions show, I talk about entry level telescopes, why we can see galaxies billions of light years away but not objects on the Moon, and why events that won't happen billions of years into the future still make us kind of sad.
2018-Jun-04 • 63 minutes
Episode 434: Open Space 8: Guest Dr. Paul Sutter from Ask a Spaceman
Paul was busy last week, but now he's ready to join me for an hour answering your mind bending questions about space and astronomy. Bring all your complex questions about dark matter, black holes and the Big Bang and he'll sort it all out.
2018-May-31 • 11 minutes
Episode 433: 354: Are We The First Advanced Civilization in The Solar System?
Humans are believed to be the most technologically advanced civilization that’s ever set foot on Earth, or really anywhere in the Solar System. But are we the first?
2018-May-29 • 22 minutes
Episode 432: QA 58: Can We Live If The Sun Dies? and More, Featuring Astronaut Mike Massimino
In this week's questions show, astronaut Mike Massimino answers a question about astronaut training, I wonder how we could survive if the Sun dies, and explain why the shuttle's fuel tank was orange.
2018-May-28 • 58 minutes
Episode 431: Open Space 7: Guest Eric Berger from Ars Technica
In my opinion, Eric Berger (aka @sciguyspace) is one of the top journalists working on stories about spaceflight, especially SpaceX, Blue Origins and NASA. Eric will join me live to answer your questions about the state of private and public space exploration.
2018-May-22 • 11 minutes
Episode 430: 353: Cosmological Horizons. The Past, Present and Future Limits of Astronomy with Dr. Paul Sutter
The observable Universe is finite, which means there are limits to what we can see, now and deep into the future. Dr. Paul Sutter joins Fraser to talk about the various cosmological horizons that surround us.
2018-May-21 • 60 minutes
Episode 429: Open Space 6: Live QA with Fraser Cain
It was just me this week, answering questions from the YouTube audience.
2018-May-17 • 20 minutes
Episode 428: QA 57: Is The Fermi Paradox Really a Paradox? And More...
In this week's questions show, the viewers try to suggest names for balloon rockets. Could live from Venus escaped to Earth? Is the Fermi Paradox really a paradox when we've only explored a little bit of the galaxy? And More
2018-May-15 • 9 minutes
Episode 427: 352: How Do Ion Engines Work? The Most Efficient Propulsion System Out There
People always ask me why we’re stuck with chemical rockets. Seriously, exploding a bunch of hydrogen or kerosene is the best we can do?
2018-May-14 • 61 minutes
Episode 426: Open Space 5: Chasing New Horizons with Alan Stern and David Grinspoon
In this week's live QA, Fraser is joined by Dr. Alan Stern, the Principal Investigator of New Horizons and Dr. David Grinspoon to talk about their new book.
2018-May-10 • 24 minutes
Episode 425: QA 56: Is Everything We See Long Dead? And More...
When we look out into space, are we really just seeing stars, planets and galaxies which are long dead, ghosts from eons ago? Can black holes consume dark matter? Can we repair Kepler and other dead satellites, and more.
2018-May-08 • 11 minutes
Episode 424: 351: The Militarization of Space. Do We Really Need a Space Force?
President Trump recently called for the creation of a space force to deal with the future warfighting in space. It turns out, this already exists, space is already well militarized.
2018-May-07 • 60 minutes
Episode 423: Open Space 4: John Michael Godier
In this week's live QA, Fraser is joined by sci-fi author and futurist John Michael Godier.
2018-May-04 • 23 minutes
Episode 422: QA 55: Launching Rockets From Balloons? Featuring Emily Lakdawalla From The Planetary Society
In this week's questions show, Fraser wonders if lava tubes are stable, the best places to extract resources from the Solar System, and why the US has to pay for everyone's science.
2018-May-03 • 9 minutes
Episode 421: 350: Thanks To Gaia We Now Know Exactly Where 1.7 Billion Stars Are In The Milky Way
The European Space Agency just dropped an enormous amount of data onto the scientific community. The location and position of 1.7 billion stars in the Milky Way.
2018-Apr-26 • 62 minutes
Episode 420: Open Space 3: Live QA Featuring CodyDon Reeder from Cody's Lab
In this week's live QA, Fraser talks to CodyDon Reeder, the host and self-taught chemist and mad scientist from the popular YouTube channel Cody's Lab.
2018-Apr-26 • 16 minutes
Episode 419: QA 54: Why Doesn't NASA Mass Produce Spacecraft? and More...
In this week's episode, Fraser talks about how you can support the creators you love, why NASA doesn't make duplicates of its spacecraft, and what binoculars he's using.
2018-Apr-24 • 60 minutes
Episode 418: Open Space 2: Live QA Featuring Isaac Arthur
In this week's live QA, Fraser welcomes futurist Isaac Arthur to talk about a range of topics, from SpaceX to Breakthrough Starshot, and what we think about the state of sci-fi on TV.
2018-Apr-19 • 21 minutes
Episode 417: QA 53: How Many Planets Can We Detect? And More... Featuring Professor David Kipping
In this week's questions show, Fraser gets excited about the NIAC awards, considers how NASA will deal with a fully operational BFR, and a special guest answer from Professor David Kipping from Columbia University's Cool Worlds lab.
2018-Apr-18 • 60 minutes
Episode 416: Open Space 1: Live QA on YouTube
Once a week I'll be opening up the livestream on my YouTube channel and taking questions from the audience, as well as inviting special guests to join me. I didn't think about turning into this into a podcast, so I apologize. Next time I'll be more careful about making sure I read out the questions carefully for audio listeners.
2018-Apr-17 • 10 minutes
Episode 415: 349: Farewell Kepler. Welcome TESS And The Quest To Find Earth 2.0
We’re now entering the final days for NASA’s Kepler Space Telescope. It’s running out of fuel and already crippled by the loss of its reaction wheels. In just a few months NASA will shut it down for good. That is sad, but don’t worry, NASA’s next planet hunting spacecraft, the Transiting Exoplanet Survey Telescope is on the launchpad and ready to fly to space to take over where Kepler left off. Finding Earth-sized worlds in the Milky Way.
2018-Apr-12 • 14 minutes
Episode 414: QA 52: Could Satellites With Lasers To Clear Debris Be Weapons Too? And More...
In this week's questions show, Fraser explains how space debris hunting satellites could also be used as weapons, why his green screen is always set to Endor, and ways to find nearby places for stargazing.
2018-Apr-11 • 10 minutes
Episode 413: 348: Living Underground on Other Worlds. Exploring Lava Tubes
The Moon and Mars will probably be the first places in the Solar System that humanity will try to live after leaving the safety and security of Earth. But those worlds are still incredibly harsh environments, with no protection from radiation, little to no atmosphere, and extreme temperatures. Living on those worlds is going to be hard, it’s going to be dangerous. Fortunately, there are a few pockets on those worlds that’ll make it a tiny little bit easier to get a foothold in the Solar System: lava tubes. ...
2018-Mar-29 • 18 minutes
Episode 412: QA 51: Could We See Ourselves in the Past? And more..
In this week's QA, I wonder if we could use the speed of light to see ourselves in the past, how the Mars rovers clean their solar panels, and if aliens would infect us with their bacteria and viruses.
2018-Mar-27 • 13 minutes
Episode 411: 347: Searching for Life on Europa? Going Under the Ice
We’re now learning that icy worlds seem to be the best places in Solar System where life could be hiding. Worlds like Europa and Enceladus, which have vast oceans of liquid water beneath a shell of water ice. Clearly we need to explore these worlds, to go deep down beneath the ice to explore the ocean depths. But how do you drill through kilometers of ice to reach it?
2018-Mar-22 • 21 minutes
Episode 410: QA 50: Can James Webb Find Megastructures? And More... Featuring Abby Harrison
In this week's questions show, I wonder if the James Webb Space Telescope will be able to find satellites around other stars, what my favorite sci-fi FTL method is, and why can't we see Mars as a bright object in the sky?
2018-Mar-21 • 11 minutes
Episode 409: 346: Which Are The Real Pictures of Space? What’s a Photo and What’s An Illustration?
With modern computer graphics, it’s sometimes hard to know which is an actual photograph of space, and what’s an illustration or a 3D rendering. Some really fascinating discoveries don’t have a pretty picture to go along with them, so illustrations are created to help us understand.
2018-Mar-15 • 23 minutes
Episode 408: QA 49: How Would We Drill Into Europa? And More...
In this week's questions show, I explain why I never get to the point, if we'll ever reach interstellar space, and how we'd get down below the ice sheet on Europa.
2018-Mar-14 • 12 minutes
Episode 407: 345: What Will It Take To Make Artificial Gravity? Surviving in Space Forever
If we want to live and work in space for long periods of time, we’ll need to conquer the lack of gravity and its effects on the human body. We’ll want to come up with some kind of artificial gravity. Futurists imagine huge rotating space stations, but realistically there are strategies that could provide artificial gravity for the times that we need it, and allow us to survive in space forever.
2018-Mar-09 • 25 minutes
Episode 406: QA 48: Is Falcon Heavy More Powerful Than Space Shuttle? And More...
In this week's QA, I compared apples to apples and look at the launch capability of the Falcon Heavy versus the Space Shuttle. The answer may surprise you. We also look at extracting energy from a black hole, and if launching satellites from the Earth's poles will avoid a Kessler Syndrome.
2018-Mar-05 • 16 minutes
Episode 405: 344: What Are the Limits of Science? A Conversation with Dr. Paul Sutter
During our Iceland adventure, I had a chance to sit down with Dr. Paul Sutter and talk about the limits of science. Why a better version of the Planck Mission can't tell us anything else about the cosmic microwave background radiation.
2018-Mar-01 • 24 minutes
Episode 404: QA 47: Starter Telescope Advice and More. Featuring Dr. Alan Stern from New Horizons
In this week's question show, I explain why I'm happy to answer questions, what first telescope people should get, and if we've ever seen a black hole ever. Also, stick around to the end, where Dr. Alan Stern, the principal investigator of New Horizons answers a question about the mission.
2018-Feb-27 • 12 minutes
Episode 403: 343: NASA Wants To Bring A Chunk Of Comet Back To Earth.
NASA is going to decide between a comet sample return mission or a helicopter on Titan. Which mission should it be?
2018-Feb-21 • 24 minutes
Episode 402: QA 46 - Why Doesn't NASA Cancel SLS? And more... Featuring Emma Osborne
In this week's QA, I answer the several related questions about why NASA doesn't just cancel the Space Launch System and give all their money to SpaceX. With special guest answerer Emma Osborne.
2018-Feb-20 • 14 minutes
Episode 401: 342: What Has The Curiosity Rover Discovered?
NASA’s Curiosity Rover has been exploring the surface of Mars for over 5 years now. What has it turned up?
2018-Feb-14 • 13 minutes
Episode 400: QA 45: Solving Mysteries At The Speed Of Light? And more... Featuring Dr. Paul Sutter
In this QA from Iceland, astrophysicist Dr. Paul Sutter steps in to tackle some of the more complicated cosmology and physics based questions from the audience. Did the Big Bang create the matter of the Universe, how close are we do discovering what dark matter is, and more.
2018-Feb-12 • 13 minutes
Episode 399: 341: The Rocket Engines Carrying Us to Space. The SLS RS-25 (aka The Space Shuttle Main Engine)
There are few rockets more iconic than the RS-25, also known as the Space Shuttle main engine. Even though it’s been around in some form since the 1970s, it’s been improved and upgraded several times, making it the most efficient liquid fuel rocket engine going today. And now the RS-25 is going to see a new chapter in its history, working to carry NASA’s new Space Launch System back to deep space, beyond Earth orbit.
2018-Feb-06 • 25 minutes
Episode 398: QA 44: Am I Ruining Sci-Fi? and more
In this week's questions show, I talk about being wrong, why I'm such a buzz kill to sci-fi, and what I'd launch on a Falcon Heavy.
2018-Feb-05 • 9 minutes
Episode 397: 340: What Is The Flyby Anomaly? Why Spacecraft Aren't Where They're Supposed to Be
You might have heard of the recently solved Pioneer anomaly. But what about the flyby anomaly? The unexpected velocity change that happens during gravitational slingshots.
2018-Feb-01 • 28 minutes
Episode 396: QA 43: Will New Telescopes Challenge The Big Bang and More...
In this week's questions show, Fraser is excited to see the southern hemisphere night sky, considers how the next generation of telescopes will change our understanding of the Big Bang, and suggests what you should look at with a new telescope.
2018-Jan-28 • 11 minutes
Episode 395: 339 - What'll It Take to Find Life? Searching the Universe for Biosignatures
When astronomers scan the atmospheres of other worlds, they’ll be looking for gases to confirm that yes, indeed, there’s life there. It turns out, this is actually pretty tough.
2018-Jan-23 • 21 minutes
Episode 394: QA 42: Where Can You Escape Time Dilation? And More...
In this week's questions show, Fraser wonders where you'd have to go in the Universe to minimize your time dilation, how to see Iridium Flares, how interferometry works, and more.
2018-Jan-21 • 13 minutes
Episode 393: 338 - Which Are The Real Photos of Spacecraft?
When we see images of space, it’s hard to know which are real images and which are artist illustrations.
2018-Jan-11 • 22 minutes
Episode 392: QA 41: Will We Ever Clear That Space Junk? and more...
In this week's questions show, Fraser wonders how we're ever going to clear all that space junk orbiting Earth, whether it's better to colonize Mars or Mercury, and can water worlds explain the Fermi Paradox?
2018-Jan-04 • 11 minutes
Episode 391: 337 - Life Beneath the Ice
Forget rocky worlds like Earth and Mars. New discoveries about icy worlds like Europa and Enceladus make them the ideal candidates for the search for life in the Universe. In fact there could be hundreds, or even thousands of times more worlds out there with ability to support life.
2018-Jan-02 • 11 minutes
Episode 390: 336 - What Do We Do With Dead Spacecraft
We try to avoid thinking about it, but spacecraft are machines that break down and eventually fail. Some can last for years, others decades, but in the end they’ll be gone forever.
2017-Dec-19 • 22 minutes
Episode 389: QA 40: When Will the Big Rip Happen and more...
In this QA episode, Fraser wonders when the Big Rip might happen, could there be binary galaxies, what it would be like to live in higher gravity.
2017-Dec-15 • 9 minutes
Episode 388: 335 - Why Did Mars Lose Its Atmosphere?
Mars is in the spotlight now, as both SpaceX and NASA are preparing their long range plans to send humans to the Red Planet. But Mars is an inhospitable environment, especially because of its tenuous and poisonous atmosphere of carbon dioxide.
2017-Dec-12 • 9 minutes
Episode 387: 334 - Interstellar Asteroid
On October 25, 2017, astronomers from NASA’s Minor Planet Center sent out an announcement that they needed help confirming the trajectory of an interesting object.
2017-Dec-10 • 23 minutes
Episode 386: QA 39: Galactic Escape Velocity and More... Featuring Astronaut Terry Virts
In this week’s question show, Fraser explains why almost everything in the Solar System is spinning in the same direction, is there a limit to how massive black holes can get, and do galaxies have an escape velocity?
2017-Dec-06 • 13 minutes
Episode 385: 332 - Can We Protect Astronauts
Space is our future, but space is also a deadly place, with poisonous radiation and an increased risk of cancer. We’re protected here on Earth thanks to our planet’s magnetosphere, but is there a way to create an artificial magnetosphere and shield astronauts?
2017-Dec-06 • 10 minutes
Episode 384: 333 - How Do Planets Shift Orbits
We once thought our Solar System was normal, average. How wrong we were, how varied the planetary systems are out there. It turns out, the migration of planets played a huge role in the Solar System we see today.
2017-Dec-01 • 22 minutes
Episode 383: QA 38: Measuring a Black Hole’s Spin and more. Featuring Andy Weir Author of the Martian
In this week’s question show, Fraser explains how astronomers measure the spin rate of black holes, other uses of gravitational slingshots, and why everyone is talking about Patreon.
2017-Nov-14 • 25 minutes
Episode 382: QA 37: Why Am I Such a SpaceX Hater (or Fanboy)? And More...
In this week’s question show, Fraser explains his thoughts on SpaceX, what he does for his regular job, and wonders if you could use a black hole to perform gravitational slingshots, whether planets could hide in Lagrange points, and growing trees on Mars.
2017-Nov-13 • 28 minutes
Episode 381: 331 - What Is Eternal Inflation
In order to get the large scale structure of the Universe we see today, cosmologists have proposed the idea of inflation, that the Universe expanded an enormous amount in the earliest moments. But if inflation really happened, then it has even stranger implications for the nature of the Universe and the search for multiverses.
2017-Nov-08 • 9 minutes
Episode 380: 330 - Going Back To The Moon
On October 5th, 2017, US Vice President Mike Pence announced that NASA is going back to the Moon. He didn’t provide any other details, just some kind of moonward directed space exploration. And it turns out they won’t be the only ones. The Moon is going to be a busy busy place.
2017-Oct-30 • 23 minutes
Episode 379: QA 36: Growing Plants in Lunar Regolith? And More
In this week’s question show, Fraser wonders if we’ll be able to grow crops in lunar soil, if the Moon has been changing over time, and what title does Elon Musk get when he colonizes Mars.
2017-Oct-24 • 10 minutes
Episode 378: 329 - What Is An Electric Sail
We’re all familiar with the idea of solar sails to explore the Solar System, using the light pressure from the Sun. But there’s another propulsion system that could harness the power of the Sun, electric sails, and it’s a pretty exciting idea.
2017-Oct-20 • 9 minutes
Episode 377: 328 - Kilonova
Astronomers have made the groundbreaking detection of two neutron stars colliding in a galaxy 130 million light years away. They detected the gravitational waves AND the blast of radiation released from the collision, observing a kilonova for the first time.
2017-Oct-19 • 10 minutes
Episode 376: 327 - Where Do Comets Come From
Some comets orbit the Sun on a regular basis, but others come in from deep space, a region known as the Oort Cloud. What causes them to make this journey, and will we ever be able to explore the Oort Cloud?
2017-Oct-17 • 20 minutes
Episode 375: QA 35: Best Place for a Telescope? And More
In this week’s question show, Fraser wonders where would be the best place to put a really powerful telescope, why a kilonova is important, and what happens when brown dwarfs die.
2017-Oct-11 • 17 minutes
Episode 374: QA 34: Will Ice Protect Us From Radiation? And More
In this week’s question show, Fraser wonders if the Earth will get new moons, if dark energy is getting more diluted over time, and if the ice on Jupiter’s moons will protect us from its deadly radiation.
2017-Oct-11 • 11 minutes
Episode 373: 326 - SpaceX Goes All in On The Big Freaking Rocket
Elon Musk gave us an update on SpaceX’s plans to send humans to Mars, going all in on their new launch vehicle: the BFR.
2017-Sep-24 • 10 minutes
Episode 372: 325 - Deep Space Gateway
NASA is working on developing a space station in a cis-lunar orbit that will serve as the jumping off point to exploring the Solar System; it’s known as the Deep Space Gateway.
2017-Sep-19 • 18 minutes
Episode 371: QA 33: Should We Sweep the Moon? And More, Featuring Scott Manley
In this week’s question show, Fraser searches for the most energetic collisions in the Universe, whether we should vacuum up dust on the Moon, and are there supernovae that don’t create black holes.
2017-Sep-10 • 9 minutes
Episode 370: 324 - What Are Globular Clusters?
One of the most beautiful and scientifically interesting objects in space are the globular clusters, containing hundreds of thousands of stars. What are they and where did they come from?
2017-Sep-08 • 20 minutes
Episode 369: QA 32: Why Can’t James Webb Be Repaired? And More
In this week’s question show, Fraser explains why James Webb can’t be repaired if anything goes wrong, why we even need space telescopes in the first place, and his favorite methods of zipping around the Solar System.
2017-Sep-07 • 8 minutes
Episode 368: 323 - Intermediate Mass Black Hole Discovered
Astronomers have been searching for mid-weight black holes, and now they’ve found one, right here in the Milky Way.
2017-Sep-05 • 12 minutes
Episode 367: 317 - What Missions Have Been Cancelled
Over the past decades, many missions have been canceled. What alternative history could we have had if these projects had gone through?
2017-Sep-05 • 11 minutes
Episode 366: 318 - Where Are The Voyagers Now
We’re nearly at the 40th anniversary of the launch of NASA’s Voyager spacecraft. And they’re still going! Let’s remember these amazing missions.
2017-Sep-05 • 10 minutes
Episode 365: 319 - What Are The Van Allen Belts
The Van Allen Belts surround the Earth with deadly radiation. What can we do to get past them and escape into deep space?
2017-Sep-05 • 10 minutes
Episode 364: 321 - Rise Of The Supertelescopes Part 2
In part 2 of this series, we look at the supertelescopes heading to space in the next few decades.
2017-Sep-05 • 12 minutes
Episode 363: 320 - Rise Of The Supertelescopes Part 1
Astronomy is about to get much much more exciting, with a whole new class of enormous telescopes developed on Earth and in space. How much more powerful? What will we be able to see?
2017-Sep-05 • 11 minutes
Episode 362: 322 - Supermassive Black Holes Or Galaxies
It’s a mystery that’s puzzled astronomers for years. Which came first, supermassive black holes or the galaxies that surround them?
2017-Sep-04 • 16 minutes
Episode 361: QA 31: Is Contacting Aliens Our Worst Mistake? And More
In this week’s question show, Fraser wonders if science is the best tool we’ve got, if communicating with aliens is a wise idea, and how he feels about people falling asleep to his videos.
2017-Aug-28 • 18 minutes
Episode 360: QA 30: Is the Earth Increasing or Decreasing in Mass? And More
In this week’s question show, Fraser answers questions about dark matter black holes, the magnetospheres of exoplanets and whether the Earth is increasing or decreasing in mass.
2017-Aug-04 • 17 minutes
Episode 359: QA 29: Are Generational Ships Possible? And more...
In this week’s QA, Fraser worries about artificial super intelligence, getting flung out of the Milky Way.
2017-Jul-29 • 8 minutes
Episode 358: 313 - What Happens During a Solar Eclipse
North America is preparing itself for the August Eclipse, so we thought it would be a good time to explain how eclipses work and what’s going on as the Moon briefly destroys the Sun.
2017-Jul-29 • 10 minutes
Episode 357: 315 - How Do We Protect Earth From Asteroids Part 2
Once we know where all the dangerous asteroids are, how do we prevent one from hitting Earth?
2017-Jul-29 • 10 minutes
Episode 356: 314 - How Do We Protect Earth From Asteroids Part 1
We know we live in a cosmic shooting gallery. Who’s got their eyes on the sky, and how will we prevent an asteroid strike if we find a dangerous space rock?
2017-Jul-29 • 10 minutes
Episode 355: 316 - Where Will The Space Launch System Take Us
NASA is working on the most powerful rocket ever built: the Space Launch System. What could it be used for to explore the Solar System?
2017-Jul-24 • 22 minutes
Episode 354: QA 28: Dealing with Conspiracy Theories and More...
In this week’s questions show, Fraser explains how the Apollo astronauts got past the Van Allen Belt, bulking up brown dwarfs, and how to deal with conspiracy theories.
2017-Jul-16 • 20 minutes
Episode 353: QA 27: Asteroid as a Space Ship and more...
In this week’s QA, Fraser talks using an asteroid for a space ship, colonizing the whole galaxy, and whether you’ve got dark matter all around you.
2017-Jul-06 • 11 minutes
Episode 352: 312 - Why Haven't We Gone Anywhere
It’s been half a century since humans first set foot on the Moon? Why haven’t we gone back? Will we ever go anywhere interesting in space?
2017-Jul-05 • 19 minutes
Episode 351: QA 26: Faster Than Light Into the Past?
In this week’s QA, Fraser talks about black holes consuming dark matter, if traveling faster than light moves you backwards in time, and what those big pools under rockets are for.
2017-Jun-29 • 9 minutes
Episode 350: 311 - Is Time To Go Back To Uranus And Neptune
We’ve only seen Uranus and Neptune one time up close. There are now some mission ideas in the works that might take us back.
2017-Jun-21 • 10 minutes
Episode 349: 310 - Is Human Hibernation Possible
We know trips in space will take a long time. Can we go to sleep for the journey and then wake up when we arrive?
2017-Jun-21 • 23 minutes
Episode 348: QA 25: Is It Wrong to Dismantle Planets and More...
In this week’s QA, Fraser talks about how spacecraft deal with orbital debris, the ethics of dismantling planets, the age of life in the Universe. With special guest answerer, Dr. Paul Matt Sutter.
2017-Jun-18 • 10 minutes
Episode 347: 309 - Seeing Gravity
We’ve now had multiple detections of gravitational waves, opening up a whole new field: gravitational astronomy. We talk about the detections made so far, and how we can see the Universe in a whole new way.
2017-Jun-13 • 10 minutes
Episode 346: 308 - Flying Into The Sun
NASA is planning a mission to get as close as possible as we can to the Sun and reveal its mysteries.
2017-Jun-12 • 17 minutes
Episode 345: QA 24: Are Aliens Testing Us and More...
In this week’s QA, Fraser talks about how aliens might be testing our morality, traveling faster than light to go back in time, and alternatives to the Big Bang Theory.
2017-Jun-08 • 10 minutes
Episode 344: 307 - Construction Tips From A Type 2 Engineer Part 1
Fraser Cain and Isaac Arthur team up again to bring you another epic collaboration. This time, it’s a 2-part series of construction tips from an engineer from a Type 2 Civilization. In this episode, we harvest helium 3, mine the asteroids, and rearrange the Solar System.
2017-Jun-06 • 16 minutes
Episode 343: QA 23: Black Hole Lagrange Points and More...
In this week’s QA, Fraser talks about capturing comets, finding Lagrange Points around black holes, and what would happen if you crashed a whole lot of oxygen into the Sun.
2017-Jun-06 • 8 minutes
Episode 342: 306 - How Do We Know The Universe Is Flat
Cosmologists tell us that the Universe is flat. It sure feels like 3-dimensions. What does this even mean, and how do we know it’s true?
2017-Jun-01 • 8 minutes
Episode 341: 305 - Can We Own Space
Owning land here on Earth is nice and legal. But what about a plot of land on the Moon or Mars? When can I buy some ice on Europa?
2017-May-30 • 20 minutes
Episode 340: QA 22: China’s Human Space Exploration and More...
In this week’s QA, Fraser talks about the Chinese space exploration efforts, rotating space stations with artificial gravity and why he’s always standing in a forest.
2017-May-30 • 9 minutes
Episode 339: 304 - What Was Cosmic Inflation
The Big Bang was a tremendous theory, but it had a few problems. In 1980 Alan Guth developed the revolutionary theory of cosmic inflation, and astronomers have been looking for evidence to this day.
2017-May-27 • 9 minutes
Episode 338: 303 - How Far Away Is Fusion Power
The Sun uses its enormous mass to crush hydrogen into fusion, releasing enormous energy. How long will it be until we’ve got this energy source for Earth?
2017-May-22 • 19 minutes
Episode 337: QA 21: How Could We Destroy a Galaxy and More...
In this week’s QA, Fraser proposes ways to destroy the Milky Way, wonders what might happen if a warp drive ship passes through a planet, and how you could keep a galaxy alive forever.
2017-May-22 • 11 minutes
Episode 336: 302 - The Mars Project
In a special two part episode, Fraser collaborates with space historian Amy Shira Teitel at Vintage Space to investigate what spaceflight advances could have happened. Amy looks at the lost Apollo Missions, while Fraser talks about Werhner Von Braun’s “Mars Project”.
2017-May-20 • 10 minutes
Episode 335: 301 - Are There Dark Matter Galaxies
We know there’s dark matter, and there are galaxies, but are there galaxies entirely made up of dark matter? Astronomer Sarah Pearson joins Fraser to talk about what’s out there.
2017-May-09 • 11 minutes
Episode 334: 300 - How Fast Are Stars Moving
The stars look static in the sky, but are they moving? How fast, and how do we know? What events can make them move faster, and how can humans make them move?
2017-May-08 • 21 minutes
Episode 333: QA 20: Going Skydiving on Mars and More...
In this week's QA, Fraser contemplates the horror of advertising in space, setting off nukes to counteract global warming, and what it would be like to go skydiving on Mars.
2017-May-03 • 11 minutes
Episode 332: 299 - Why Do Rockets Need Stages
2017-May-02 • 16 minutes
Episode 331: QA 19: Can Dark Matter Be Dyson Spheres and More...
In this QA, Fraser wonders how Earth would react if aliens colonized Mars, is it ethical to seed Enceladus with life, and if the total mass of the Universe has changed.
2017-Apr-26 • 11 minutes
Episode 330: 298 - What Are Fast Radio Bursts
2017-Apr-20 • 18 minutes
Episode 329: QA 18: Best Place For a Mass Driver and More...
In this week's QA, Fraser suggests some good locations for a Mass Driver launcher, how the laws of physics would be different in a different universe, and what it would take to throw a supermassive black hole out of its galaxy.
2017-Apr-18 • 10 minutes
Episode 328: 297 - Do I Believe In UFOs
2017-Apr-15 • 7 minutes
Episode 327: 296 - Chemicals For Life Found On Enceladus
2017-Apr-11 • 20 minutes
Episode 326: QA 17: A Planet Inside a Star and More...
In this week's questions show, Fraser tries again to explain why the Universe has no center, if there's any evidence for intelligent design, and why we don't have drones exploring other worlds.
2017-Apr-11 • 11 minutes
Episode 325: 295 - Space X Just Reused A Rocket
2017-Mar-25 • 10 minutes
Episode 324: 294 - What About A Mission To Titan
2017-Mar-22 • 8 minutes
Episode 323: 293 - Why Doesnt Earth Have Rings
2017-Mar-21 • 18 minutes
Episode 322: QA 16: The Hazards of Antimatter Fuel and More...
In this week's QA, Fraser answers why antimatter is the perfect fuel source, and why the evidence of ancient civilizations won't entirely be hidden by plate tectonics.
2017-Mar-17 • 14 minutes
Episode 321: 292 - Do We Live In A Hologram
2017-Mar-14 • 13 minutes
Episode 320: 291 - What's On the Surface Of Venus
2017-Mar-13 • 18 minutes
Episode 319: QA 15: What's a Type IV Civilization and More...
In this week's question show, Fraser extends the Kardashev Scale one more notch, urges everyone to see the Milky Way before they die, and looks for actual pictures of satellites in space.
2017-Mar-08 • 11 minutes
Episode 318: 290 - What Did Cassini Teach Us
2017-Mar-07 • 21 minutes
Episode 317: QA 14: Why Doesn't the Earth Implode and More...
In our newest questions show, we answer your questions about black hole rotation, what stops the Earth from imploding, and why Fraser is part of massive Sputnik coverups.
2017-Feb-24 • 8 minutes
Episode 316: 289 - Seven New Earth Sized Worlds Discovered
2017-Feb-09 • 10 minutes
Episode 315: 288 - Can We Launch Nuclear Waste Into The Sun
2017-Jan-27 • 18 minutes
Episode 314: QA 13: Where Could We Hide From an Asteroid Strike and More...
In our latest QA, Fraser tackles hiding places from asteroid strikes, merging Earths, and the fastest way we could explore Planet 9. If we ever actually find it.
2017-Jan-26 • 11 minutes
Episode 313: 287 - Whats That Bright Star In The Sky
2017-Jan-17 • 8 minutes
Episode 312: 286 - What Was The Carrington Event
2017-Jan-10 • 9 minutes
Episode 311: 285 - Could We Marsiform Ourselves
2017-Jan-09 • 13 minutes
Episode 310: QA 12: Does the Universe Have a Preferred Spin and More...
This week's question show includes the visible versus the visitable Universe, and why don't black holes increase in mass as virtual particles fall into them? Does the Universe have a preferred spin direction?
2016-Dec-06 • 7 minutes
Episode 309: 284 - How Can An Infinite Universe Start From A Singularity
2016-Nov-29 • 7 minutes
Episode 308: 283 - What Are Multiple Star Systems
2016-Nov-28 • 13 minutes
Episode 307: QA 11: Why the ISS Doesn't Rotate and More...
In this week's question show, our viewers want to know why the ISS doesn't rotate, and if you can detect a black hole without an accretion disc. Also, why are we always shooting our videos in a forest?
2016-Nov-24 • 8 minutes
Episode 306: 282 - What If We Do Find Aliens
2016-Nov-22 • 11 minutes
Episode 305: 281 - Is There Life On Mars
2016-Nov-22 • 13 minutes
Episode 304: QA 10: Living on a Cube Planet and More...
In this week's questions show, Fraser answers whether black holes are really black, who's going to win the next space race, and whether we can weaponize asteroids.
2016-Nov-15 • 8 minutes
Episode 303: 280 - What Is The Interplanetary Transport Network
2016-Nov-13 • 13 minutes
Episode 302: QA 9: Jet Planes in Space and More...
In this week's QA, Fraser answers questions about why jet planes can't fly into space, what does he mean when he says "the Universe", and why we need to just say "I don't know".
2016-Nov-04 • 7 minutes
Episode 301: 279 - When Was The First Light In The Universe
2016-Nov-01 • 10 minutes
Episode 300: QA 8: Life with Quasars and More...
In this questions show, we wonder when we’ll finally merge our brains with computers, is the Death Star a Dyson Sphere? And whether we could live in lava tubes.
2016-Nov-01 • 7 minutes
Episode 299: 278 - How Many Galaxies Are There In The Universe
2016-Oct-27 • 6 minutes
Episode 298: 277 - What Is The Mars Curse
2016-Oct-25 • 6 minutes
Episode 297: 276 - Can We Get Space Madness
2016-Oct-24 • 12 minutes
Episode 296: QA 7: Joining the Galactic Federation and More...
In this week’s QA episode, we wonder if there’s a galactic federation out there, keeping us in a cosmic zoo. What’s the ideal length of our episodes, and when will the space wars begin?
2016-Oct-20 • 5 minutes
Episode 295: 275 - What Is A Nova
2016-Oct-18 • 6 minutes
Episode 294: 274 - What Are Cosmic Voids
2016-Oct-16 • 13 minutes
Episode 293: QA 6: Surfing the Lagrange Points and More...
Can you use Lagrange Points to easily travel around the Solar System? Could we use a giant slingshot to just launch objects into space? Fraser answers these questions and more.
2016-Oct-12 • 6 minutes
Episode 292: 273 - Shouldnt We Fix The Earth First
2016-Oct-10 • 5 minutes
Episode 291: 272 - How Do Supernovae Fail
2016-Oct-09 • 13 minutes
Episode 290: QA 5: Retrieving Life From Europa and More...
In this questions show, Fraser explains why it might have gotten much easier to bring samples of life back from Europa. Oh, and why he’s always saying “Milkdromeda”.
2016-Oct-06 • 7 minutes
Episode 289: 271 - Where Are All The Alien Robots
2016-Oct-04 • 6 minutes
Episode 288: 270 - What Happens When Black Holes Collide
2016-Oct-02 • 11 minutes
Episode 287: QA 4: Does Fraser Really Believe This Stuff?
In this week’s question show, we find out if Fraser really believes all this “space” stuff he’s always talking about, as well as what could be accomplished if you could just go 1% the speed of light.
2016-Sep-30 • 7 minutes
Episode 286: 246 - When Can I Die On Mars
2016-Sep-29 • 7 minutes
Episode 285: 269 - Where Can I Take Off My Space Helmet
2016-Sep-27 • 14 minutes
Episode 284: QA 1: Black Holes
You’ve got questions, I’ve got answers. In this new segment, I answer your questions about space and astronomy. Well mostly, it’s about black holes. Questions and more questions about black holes.
2016-Sep-24 • 7 minutes
Episode 283: 268 - What Is Absolute Zero
2016-Sep-23 • 10 minutes
Episode 282: QA 3: Running out of Hydrogen and More...
More questions from viewers. This time we consider different ways to clean up space debris, and Fraser is schooled on how to pronounce Euler.
2016-Sep-22 • 7 minutes
Episode 281: 267 - How Can We Save The Sun
2016-Sep-19 • 9 minutes
Episode 280: QA 2: Seeing the Earth from Mars and More...
Could you see the Earth from Mars? Do nuclear bombs work in space? Would binary stars crash into each other?
2016-Sep-19 • 6 minutes
Episode 279: 266 - Does Our Galaxy Have A Habitable Zone
2016-Sep-08 • 8 minutes
Episode 278: 265 - Are We Living In A Simulation
2016-Sep-02 • 7 minutes
Episode 277: 264 - How Cold Are Black Holes
2016-Aug-26 • 8 minutes
Episode 276: 263 - What Are The Lagrange Points
2016-Aug-15 • 7 minutes
Episode 275: 262 - Will Our Black Hole Eat The Milky Way
2016-Aug-13 • 6 minutes
Episode 274: 261 - How Close Can Moons Orbit
2016-Aug-09 • 7 minutes
Episode 273: 260 - What Are Magnetars
2016-Aug-05 • 7 minutes
Episode 272: 259 - Why Is Uranus On Its Side
2016-Jul-25 • 6 minutes
Episode 271: 258 - What Are Quark Stars
2016-Jul-21 • 6 minutes
Episode 270: 257 - How Big Is The Great Red Spot
2016-Jul-19 • 7 minutes
Episode 269: 256 - What Does The Universe Do When Were Not Looking
2016-Jul-11 • 6 minutes
Episode 268: 255 - How Fast Can Stars Spin
2016-Jul-08 • 5 minutes
Episode 267: 254 - What If Earth Stopped Orbiting The Sun
2016-Jul-05 • 6 minutes
Episode 266: 253 - When Will We Be A Type III Civilization
2016-Jun-30 • 7 minutes
Episode 265: 252 - What Is Time Dilation
2016-Jun-13 • 12 minutes
Episode 264: 251 - What Are Virtual Particles
2016-Jun-09 • 5 minutes
Episode 263: 250 - Are There Antimatter Galaxies
2016-Jun-02 • 6 minutes
Episode 262: 249 - What Are Planetary Transits
2016-May-26 • 5 minutes
Episode 261: 248 - Can Stars Be Cold
2016-May-22 • 7 minutes
Episode 260: 247 - How Far Can You Travel
2016-May-09 • 6 minutes
Episode 259: 245 - Can We Really Get To Alpha Centauri
2016-Apr-22 • 6 minutes
Episode 258: 244 - How Do We Know Theres A Planet 9
2016-Apr-19 • 6 minutes
Episode 257: 243 - Whats Outside The Universe
2016-Apr-14 • 5 minutes
Episode 256: 242 - Are There Storms On The Moon
2016-Apr-11 • 5 minutes
Episode 255: 241 - When Will Earth Lock To The Moon
2016-Apr-05 • 6 minutes
Episode 254: 240 - How Long Does It Take To Get To Jupiter
2016-Apr-01 • 5 minutes
Episode 253: 239 - Do We Live In A Special Part Of The Universe
2016-Mar-18 • 5 minutes
Episode 252: 237 - What Are The Different Kinds Of Supernovae
2016-Mar-18 • 5 minutes
Episode 251: 238 - Where Is The Closest Black Hole
2016-Feb-25 • 12 minutes
Episode 250: 236 - Was The Big Bang Just A Black Hole
2016-Feb-25 • 7 minutes
Episode 248: 234 - What Are Alien Megastructures
2016-Feb-25 • 7 minutes
Episode 247: 233 - What Is The Higgs Boson
2016-Feb-25 • 5 minutes
Episode 249: 235 - Why Do Planets Have Rings
2015-Dec-05 • 7 minutes
Episode 246: 232 - What Are Wormholes
2015-Dec-05 • 6 minutes
Episode 245: 231 - Should We Go to Mars or Back to the Moon
2015-Dec-05 • 7 minutes
Episode 238: 224 - Will We Contaminate Europa
2015-Dec-05 • 5 minutes
Episode 244: 230 - What Does It Take To Be An Astronaut
2015-Dec-05 • 5 minutes
Episode 243: 229 - What If We Dug A Tunnel Through The Earth
2015-Dec-05 • 4 minutes
Episode 242: 228 - Why Do Red Dwarfs Live So Long
2015-Dec-05 • 4 minutes
Episode 241: 227 - Did We Need The Moon For Life
2015-Dec-05 • 3 minutes
Episode 240: 226 - What Is Tidal Locking
2015-Dec-05 • 3 minutes
Episode 239: 225 - Why Arent There Eclipses Every Month
2015-Nov-07 • 7 minutes
Episode 236: 222 - Do We Really Need Rockets To Go To Space
2015-Nov-07 • 6 minutes
Episode 235: 221 - What Isthe Black Hole Information Paradox
2015-Nov-07 • 5 minutes
Episode 237: 223 - How Long Is A Day On Earth
2015-Oct-26 • 6 minutes
Episode 234: 220 - Will Minds Appear In The Cosmos
2015-Oct-26 • 5 minutes
Episode 233: 219 - Is The Universe Perfect For Life
2015-Oct-26 • 6 minutes
Episode 232: 218 - Why Do Red Giants Expand
2015-Oct-26 • 4 minutes
Episode 231: 217 - How Are Galaxies Moving Away Faster Than Light
2015-Oct-26 • 5 minutes
Episode 230: 216 - What Are White Holes
2015-Oct-07 • 6 minutes
Episode 228: 214 - Can You Kill A Star With Iron
2015-Oct-07 • 5 minutes
Episode 226: 212 - What Was The Wow Signal
2015-Oct-07 • 5 minutes
Episode 229: 215 - Is Jupiter Our Friend Or Enemy
2015-Oct-07 • 5 minutes
Episode 227: 213 - Is The Universe Dying
2015-Sep-22 • 6 minutes
Episode 225: 211 - Could We Terraforma Black Hole
2015-Sep-22 • 6 minutes
Episode 223: 209 - Will the Big Bang Go Backwards
2015-Sep-22 • 5 minutes
Episode 224: 210 - Could We Terraformthe Sun
2015-Sep-22 • 7 minutes
Episode 222: 208 - What Do Other Planets Sound Like
2015-Sep-22 • 6 minutes
Episode 221: 207 - What Did We Learn About Pluto
2015-Sep-03 • 4 minutes
Episode 220: 205 - How Do Stars Go Rogue
2015-Sep-03 • 6 minutes
Episode 219: 206 - Are Martian Dust Storms Dangerous
2015-Aug-14 • 5 minutes
Episode 218: 195 - Why Dont We Send Probes Up In The Solar System
2015-Aug-14 • 6 minutes
Episode 214: 201 - Could We Make Artificial Gravity
2015-Aug-14 • 4 minutes
Episode 211: 198 - Whats This Ridge On Iapetus
2015-Aug-14 • 7 minutes
Episode 205: 191 - Will We Ever Reach Another Star
2015-Aug-14 • 4 minutes
Episode 217: 204 - Why Is It Tough To Land On A Comet
2015-Aug-14 • 4 minutes
Episode 216: 203 - how Massive Can Black Holes Get
2015-Aug-14 • 5 minutes
Episode 215: 202 - could We Terraform Jupiter
2015-Aug-14 • 5 minutes
Episode 213: 200 - What About A Mission To Europa
2015-Aug-14 • 5 minutes
Episode 212: 199 - What If A Black Hole Met An Antimatter Black Hole
2015-Aug-14 • 4 minutes
Episode 210: 197 - How Could We Destroy The Moon
2015-Aug-14 • 4 minutes
Episode 209: 196 - How Fast Is Gravity
2015-Aug-14 • 4 minutes
Episode 208: 194 - Could We Terraform The Moon
2015-Aug-14 • 5 minutes
Episode 207: 193 - how Do Astronauts Avoid Debris
2015-Aug-14 • 5 minutes
Episode 206: 192 - What Is The Habitable Zone
2015-Aug-14 • 5 minutes
Episode 204: 190 - What Are The Biggest Mysteries In Astronomy
2015-Aug-14 • 6 minutes
Episode 203: 189 - When Will We Find Another Earth
2015-Aug-14 • 5 minutes
Episode 202: 188 - Do Black Holes Compress Forever
2015-Aug-14 • 4 minutes
Episode 201: 187 - How Low Can You Orbit
2015-Aug-14 • 5 minutes
Episode 200: 186 - What Are Gravitational Waves_mp 3
2015-Aug-14 • 4 minutes
Episode 199: 185 - How Do Galaxies Die
2015-Aug-14 • 6 minutes
Episode 198: 184 - Would We See The Aliens Coming
2015-Jun-01 • 6 minutes
Episode 195: 181 - How Bad Can Solar Storms Get
2015-Jun-01 • 5 minutes
Episode 181: 167 - How Dense Is The Asteroid Belt
2015-Jun-01 • 6 minutes
Episode 179: 165 - Is The Universe Finite Or Infinite
2015-Jun-01 • 4 minutes
Episode 197: 183 - What Was Here Before The Solar System
2015-Jun-01 • 6 minutes
Episode 196: 182 - How Long Will Our Spacecraft Survive
2015-Jun-01 • 4 minutes
Episode 194: 180 - Could You Put A Black Hole In Your Pocket
2015-Jun-01 • 5 minutes
Episode 193: 179 - Could We Live On Jupiter
2015-Jun-01 • 7 minutes
Episode 192: 178 - What Shape Is The Universe
2015-Jun-01 • 5 minutes
Episode 191: 177 - What Is The Moons Real Name
2015-Jun-01 • 6 minutes
Episode 190: 176 - What Animals Have Been To Space
2015-Jun-01 • 5 minutes
Episode 189: 175 - Why Cant We See The Center Of The Milky Way
2015-Jun-01 • 4 minutes
Episode 188: 174 - Do Astronauts Drink Their Pee
2015-Jun-01 • 5 minutes
Episode 187: 173 - Am I Being Watched From Space
2015-Jun-01 • 5 minutes
Episode 186: 172 - Is There A Mirror Universe
2015-Jun-01 • 4 minutes
Episode 185: 171 - Does The Solar System Line Up With The Milky Way
2015-Jun-01 • 4 minutes
Episode 184: 170 - How Do Black Holes Evaporate
2015-Jun-01 • 5 minutes
Episode 183: 169 - How Quickly Does A Supernova Happen
2015-Jun-01 • 5 minutes
Episode 182: 168 - How Can Black Holes Shine
2015-Jun-01 • 5 minutes
Episode 180: 166 - Will The Universe Run Out Of Energy
2015-Mar-25 • 6 minutes
Episode 177: 163 - Could The Death Star Destroy A Planet
2015-Mar-25 • 4 minutes
Episode 174: 160 - How Long Does It Take To Get To Pluto
2015-Mar-25 • 5 minutes
Episode 178: 164 - How Could You Capture An Asteroid
2015-Mar-25 • 5 minutes
Episode 176: 162 - How Do We Know Dark Energy Exists
2015-Mar-25 • 5 minutes
Episode 175: 161 - How Do We Know Dark Matter Exists
2015-Mar-03 • 3 minutes
Episode 173: 152 - How Fast Is The Universe Expanding
2015-Mar-03 • 5 minutes
Episode 172: 153 - Where Did The Big Bang Happen
2015-Mar-03 • 6 minutes
Episode 171: 154 - Are Astronauts Really Weightless
2015-Mar-03 • 4 minutes
Episode 170: 155 - Why Does The Moon Look So Big Tonight
2015-Mar-03 • 5 minutes
Episode 169: 156 - Could There Be Another Planet Behind The Sun
2015-Mar-03 • 4 minutes
Episode 168: 157 - Could The Milky Way Become A Quasar
2015-Mar-03 • 5 minutes
Episode 167: 158 - Why Dont We Search For Different Life
2015-Mar-03 • 5 minutes
Episode 166: 159 - How Far Back Are We Looking In Time
2015-Feb-18 • 5 minutes
Episode 165: 141 - What Is The Biggest Thing In The Universe
2015-Feb-18 • 4 minutes
Episode 164: 137 - Why Is Venus So Horrible
2015-Feb-18 • 6 minutes
Episode 161: 140 - What Will We Never See
2015-Feb-18 • 6 minutes
Episode 153: 149 - What's Happening In The Universe Right Now
2015-Feb-18 • 4 minutes
Episode 151: 150 - Is Everything Actually Shrinking
2015-Feb-18 • 4 minutes
Episode 163: 138 - How Do We Know How Old Everything Is
2015-Feb-18 • 6 minutes
Episode 162: 139 - How Many Stars Did It Take To Make Us
2015-Feb-18 • 4 minutes
Episode 160: 142 - How Much Water Would Extinguish The Sun_mp 3
2015-Feb-18 • 4 minutes
Episode 159: 143 - Will We Mine Asteroids
2015-Feb-18 • 4 minutes
Episode 158: 144 - Are Gamma Ray Bursts Dangerous
2015-Feb-18 • 4 minutes
Episode 157: 145 - What Causes The Northern Lights
2015-Feb-18 • 4 minutes
Episode 156: 146 - Are Aliens Watching Old Tv Shows
2015-Feb-18 • 6 minutes
Episode 155: 147 - Why Is Andromeda Coming Towards Us
2015-Feb-18 • 5 minutes
Episode 154: 148 - How Do Planets Go Rogue
2015-Feb-18 • 4 minutes
Episode 152: 151 - What Is Gravitational Lensing
2015-Feb-17 • 5 minutes
Episode 150: 133 - What Is The Smallest Star
2015-Feb-12 • 3 minutes
Episode 149: 129 - How Quickly Do Black Holes Form
2015-Feb-12 • 4 minutes
Episode 148: 130 - Is Phobos Doomed
2015-Feb-12 • 3 minutes
Episode 147: 131 - How Are Energy And Matter The Same
2015-Feb-12 • 4 minutes
Episode 146: 132 - What Came Before The Big Bang
2015-Feb-12 • 5 minutes
Episode 145: 134 - How Do We Measure Distance In The Universe
2015-Feb-12 • 6 minutes
Episode 144: 135 - What Does Space Really Look Like
2015-Feb-12 • 5 minutes
Episode 143: 136 - Why Is Space Black
2015-Feb-10 • 3 minutes
Episode 142: 127 - What's Causing The Universe To Expand
2015-Feb-10 • 3 minutes
Episode 141: 128 - Where's All The Antimatter
2014-Nov-17 • 4 minutes
Episode 140: 115 - What Time Is It In The Universe
2014-Nov-17 • 3 minutes
Episode 139: 126 - Why Doesnt The Sun Steal The Moon
2014-Nov-17 • 4 minutes
Episode 138: 125 - When Did The First Stars Form
2014-Nov-17 • 4 minutes
Episode 137: 124 - How Does A Rocket Work
2014-Nov-17 • 5 minutes
Episode 136: 123 - How Big Is The Big Dipper
2014-Nov-17 • 3 minutes
Episode 135: 122 - What Strange Places Are Habitable
2014-Nov-17 • 4 minutes
Episode 134: 121 - Why Cant We See The Big Bang
2014-Nov-17 • 4 minutes
Episode 133: 120 - What Would A Black Hole Look Like
2014-Nov-17 • 4 minutes
Episode 132: 119 - .Could A Planet Be As Big As A Star
2014-Nov-17 • 3 minutes
Episode 131: 118 - .What Does The Earth Look Like From The Moon
2014-Nov-17 • 3 minutes
Episode 130: 117 - What Part Of The Milky Way Can We See
2014-Nov-17 • 4 minutes
Episode 129: 116 - What Would It Be Like To Fall Into A Black Hole
2014-Aug-18 • 4 minutes
Episode 124: 110 - How Big Is The Universe
2014-Aug-18 • 5 minutes
Episode 128: 114 - Are Intelligent Civilizations Doomed
2014-Aug-18 • 3 minutes
Episode 127: 113 - What Is Nothing
2014-Aug-18 • 3 minutes
Episode 126: 112 - How Do The Tides Work
2014-Aug-18 • 5 minutes
Episode 125: 111 - How Can We Clean Up That Space Junk
2014-Aug-18 • 4 minutes
Episode 123: 109 - Are All The Stars Really Dead
2014-Aug-18 • 4 minutes
Episode 122: 108 - What Are Comet Tails
2014-Aug-18 • 5 minutes
Episode 121: 107 - How Do Gravitational Slingshots Work
2014-Aug-18 • 4 minutes
Episode 120: 106 - How Do We Terraform Venus
2014-Aug-18 • 3 minutes
Episode 119: 105 - How Do We Terraform Mars
2014-Aug-18 • 4 minutes
Episode 118: 104 - Is Our Solar System Weird
2014-Aug-18 • 4 minutes
Episode 117: 103 - What Is The Great Attractor
2014-Aug-18 • 3 minutes
Episode 116: 102 - Whats Inside Jupiter
2014-Aug-18 • 5 minutes
Episode 115: 101 - How Many Ways Can The Sun Kill You
2014-Jul-08 • 4 minutes
Episode 114: 100 - Why Do People Go Crazy During The Full Moon
2014-Jun-26 • 4 minutes
Episode 113: 99 - How Can We Move The Earth
2014-Jun-26 • 4 minutes
Episode 112: 98 - Why Is Everything A Sphere
2014-Jun-18 • 4 minutes
Episode 111: 97 - What Does A Supernova Sound Like
2014-Jun-18 • 4 minutes
Episode 110: 96 - Which Planets Have Rings
2014-Jun-16 • 3 minutes
Episode 108: 94 - Why Isnt The Asteroid Belt A Planet
2014-Jun-16 • 5 minutes
Episode 107: 93 - Why Is The Moon Leaving Us
2014-Jun-16 • 4 minutes
Episode 109: 95 - How Much Of The Universe Is Black Holes
2014-Apr-30 • 4 minutes
Episode 106: 92 - Does Light Experience Time
2014-Apr-28 • 5 minutes
Episode 105: 91 - Where Is The Center Of The Universe
2014-Apr-24 • 5 minutes
Episode 104: 90 - How Can We Live On Mars
2014-Apr-14 • 6 minutes
Episode 103: 89 - How Do We Know the Moon Landing Isn't Fake
2014-Apr-10 • 4 minutes
Episode 102: 88 - Can Tatooine Be Real
2014-Apr-07 • 4 minutes
Episode 101: 87 - Can You Escape The Force of Gravity
2014-Apr-02 • 2 minutes
Episode 99: Interview 12 - Whyis Andromeda Drifting Towards Us?
2014-Apr-02 • 4 minutes
Episode 100: 85 - How Far Can You See In The Universe
2014-Apr-02 • 4 minutes
Episode 98: 86 - Why Do Galaxies Have Arms
2014-Mar-26 • 5 minutes
Episode 97: 84 - Whats The Fastest Way To Die In Space
2014-Mar-26 • 2 minutes
Episode 96: Interview - Mercury Hollows
2014-Mar-24 • 4 minutes
Episode 95: 83 - Can Light Orbit A Black Hole
2014-Mar-19 • 4 minutes
Episode 94: 82 - What Happens When The Poles Flip
2014-Mar-19 • 3 minutes
Episode 93: Interview 10 - How Does Life Recover
2014-Mar-17 • 4 minutes
Episode 92: 81 - Which Star Will Explode Next
2014-Mar-11 • 4 minutes
Episode 91: 80 - How Do You Jumpstart A Dead Star
2014-Mar-11 • 5 minutes
Episode 90: Interview 9 - What Is The Cosmic Microwave Background Radiation Ned Wright
2014-Mar-10 • 8 minutes
Episode 89: 79 - How Will Aliens Find Us
2014-Mar-06 • 4 minutes
Episode 88: 78 - Is This a Special Time in the Universe?
2014-Mar-05 • 5 minutes
Episode 87: 77 - How Do You Kill A Black Hole
2014-Mar-05 • 4 minutes
Episode 86: 75 - Could Jupiter Become A Star
2014-Mar-05 • 4 minutes
Episode 85: 76 - Can Moons Have Moons
2014-Feb-17 • 4 minutes
Episode 84: Interview 8 Why Should We Go To Europa?
2014-Feb-16 • 5 minutes
Episode 83: 74 - Where Is The Earth Located
2014-Feb-12 • 4 minutes
Episode 82: 73 - How Fast Do Black Holes Spin
2014-Feb-11 • 4 minutes
Episode 81: Interview 7 - What Are Hot Jupiters
2014-Feb-10 • 4 minutes
Episode 80: 72 - How Old Is The Universe
2014-Feb-07 • 5 minutes
Episode 79: 71 - How Can We Find Killer Asteroids
2014-Feb-05 • 5 minutes
Episode 78: Interview 6 - Whats At The Center Of The Galaxy?
2014-Feb-03 • 5 minutes
Episode 77: 70 - Could We Harvest Energy From A Star
2014-Jan-30 • 3 minutes
Episode 76: 69 - How Much Stuff Is In A Light Year
2014-Jan-29 • 5 minutes
Episode 75: Interview 5 - What Is The Future Of Our Sun?
2014-Jan-27 • 4 minutes
Episode 74: 68 - What Is A Super Earth
2014-Jan-20 • 3 minutes
Episode 73: 1 - How Long Does It Take To Get To Mars
2014-Jan-20 • 3 minutes
Episode 72: 2 - What Is The Biggest Star In The Universe
2014-Jan-20 • 4 minutes
Episode 71: 3 - How Fast Does The Earth Rotate
2014-Jan-20 • 3 minutes
Episode 70: 4 - How To See The International Space Station ISS
2014-Jan-20 • 4 minutes
Episode 69: 5 - How Many Planets Are In The Solar System
2014-Jan-20 • 3 minutes
Episode 68: 8 - How Old Is The Earth
2014-Jan-20 • 3 minutes
Episode 67: 7 - How Many Stars In The Universe
2014-Jan-20 • 3 minutes
Episode 65: 6 - How To See Your House From Space
2014-Jan-20 • 5 minutes
Episode 64: Why Pluto is Not A Planet
2014-Jan-20 • 3 minutes
Episode 63: 9 - Interesting Facts About Saturn
2014-Jan-20 • 3 minutes
Episode 62: 10 - What Is The Closest Star To Earth
2014-Jan-20 • 3 minutes
Episode 61: 11 - What Is The Hottest Planet In The Solar System
2014-Jan-20 • 5 minutes
Episode 60: 12 - Where Are All The Aliens
2014-Jan-20 • 3 minutes
Episode 59: 13 - What Is The Distance To The Moon
2014-Jan-20 • 3 minutes
Episode 58: 14 - How Cold Is Space
2014-Jan-20 • 3 minutes
Episode 57: 15 - How Many Moons Does The Earth Have
2014-Jan-20 • 3 minutes
Episode 56: 16 - How Will The World End
2014-Jan-20 • 4 minutes
Episode 55: 17 - Whats The Most Earthlike Place In The Solar System
2014-Jan-20 • 2 minutes
Episode 54: 18 - Does The Moon Rotate
2014-Jan-20 • 2 minutes
Episode 66: 0 - How Long Does It Take Sunlight To Reach Earth
2014-Jan-19 • 4 minutes
Episode 53: 67 - What Is A Solar Sail
2014-Jan-19 • 3 minutes
Episode 52: 19 - What Killed All the Dinosaurs
2014-Jan-19 • 3 minutes
Episode 51: 20 - How Hot Is the Sun
2014-Jan-19 • 3 minutes
Episode 50: 21 - How High Is Space
2014-Jan-19 • 3 minutes
Episode 49: 22 - Is Life On Mars Related To Earth
2014-Jan-19 • 3 minutes
Episode 48: 23 - Could We Move The Sun
2014-Jan-19 • 3 minutes
Episode 47: 24 - Why Do Stars Twinkle
2014-Jan-19 • 4 minutes
Episode 46: 25 - What Is A Quasar
2014-Jan-19 • 4 minutes
Episode 45: 26 - Can You Really Name A Star
2014-Jan-19 • 5 minutes
Episode 44: 27 - How Do Astronomers Find Other Planets
2014-Jan-19 • 4 minutes
Episode 43: 34 - What Is A Meteor Shower
2014-Jan-19 • 4 minutes
Episode 42: 28 - How Did Life Begin
2014-Jan-19 • 4 minutes
Episode 40: 30 - How Big Is The Solar System
2014-Jan-19 • 4 minutes
Episode 38: 32 - How Did The Moon Form
2014-Jan-19 • 4 minutes
Episode 37: 33 - Why Does The Earth Spin
2014-Jan-19 • 4 minutes
Episode 36: 35 - Is There Really A Planet X
2014-Jan-19 • 4 minutes
Episode 35: 36 - What Is A Dyson Sphere
2014-Jan-19 • 4 minutes
Episode 34: 37 - Why Are There Seasons
2014-Jan-19 • 4 minutes
Episode 33: 38 - How Do Black Holes Form
2014-Jan-19 • 4 minutes
Episode 41: 29 - Should Robots Or Humans Explore Space
2014-Jan-19 • 5 minutes
Episode 39: 31 - How Could We Find Aliens
2014-Jan-17 • 4 minutes
Episode 32: 39 - How Long Will Life Survive On Earth
2014-Jan-17 • 3 minutes
Episode 31: 40 - What Are The Phasesofthe Moon
2014-Jan-17 • 3 minutes
Episode 30: 41 - What Color Is The Sun
2014-Jan-17 • 4 minutes
Episode 29: 42 - What Is A Space Elevator
2014-Jan-17 • 4 minutes
Episode 28: 43 - Where Did The Earths Water Come From
2014-Jan-17 • 4 minutes
Episode 27: 44 - How Will The Universe End
2014-Jan-17 • 3 minutes
Episode 26: 45 - Why Is Mars Red
2014-Jan-17 • 4 minutes
Episode 25: 46 - How Many Satellites Are In Space
2014-Jan-17 • 4 minutes
Episode 24: 47 - How Far Is Earth Fromthe Sun
2014-Jan-17 • 3 minutes
Episode 23: 48 - What Is The Hottest Place On Earth
2014-Jan-16 • 4 minutes
Episode 22: 66 - Whats On The Far Side Of The Moon
2014-Jan-16 • 3 minutes
Episode 20: 50 - How Long Does It Take To Get To The Moon
2014-Jan-16 • 4 minutes
Episode 19: 51 - What If The Earth Stopped Turning
2014-Jan-16 • 5 minutes
Episode 17: 53 - What Is The Evidence For The Big Bang
2014-Jan-16 • 4 minutes
Episode 16: 54 - What Is A Pulsar
2014-Jan-16 • 4 minutes
Episode 15: 55 - Are There More Grainsof Sand Than Stars
2014-Jan-16 • 5 minutes
Episode 14: 56 - What Is The Universe Expanding Into
2014-Jan-16 • 3 minutes
Episode 13: 57 - How Do Stars Form
2014-Jan-16 • 4 minutes
Episode 12: 58 - What Is The Distance To Mars
2014-Jan-16 • 4 minutes
Episode 11: Interview 2 - What Is The Big Rip
2014-Jan-16 • 4 minutes
Episode 21: 49 - What Is The Milky Way
2014-Jan-16 • 4 minutes
Episode 18: 52 - What Is A Parsec
2014-Jan-15 • 3 minutes
Episode 10: Interview 3 - When Will We Become Interstellar?
2014-Jan-15 • 3 minutes
Episode 9: Interview 1 - Where Should We Look for Life in the Solar System
2014-Jan-15 • 5 minutes
Episode 8: 59 - Why Does The Moon Shine
2014-Jan-15 • 3 minutes
Episode 7: 60 - Is Everything In The Universe Expanding
2014-Jan-15 • 7 minutes
Episode 6: 61 - Can Stars Collide
2014-Jan-15 • 5 minutes
Episode 5: 62 - Where Did Saturns Rings Come From
2014-Jan-14 • 3 minutes
Episode 4: Interview 4 - What Are Cassini's Most Interesting Discoveries
2014-Jan-14 • 5 minutes
Episode 3: 65 - Whats On The Other Side Of A Black Hole
2014-Jan-14 • 4 minutes
Episode 2: 64 - Will The Sun Explode
2014-Jan-14 • 4 minutes
Episode 1: 63 - What Is The Kuiper Belt