| Tweet Follow @TrueSciPhi |
| # | Twitter profile | Twitter followers | Score |
| 1. |  Katie Mack@AstroKatie (a.k.a. Dr Katherine J Mack) astrophysicist/cosmologist, occasional freelance science writer, connoisseur of airplane food Raleigh, NC astrokatie.com 9 yrs, 2 mos on Twitter | 277,066 | 73.1% |
| 2. |  NASA@NASA Explore the universe and discover our home planet with @NASA. We usually post in EST (UTC-5) nasa.gov 10 yrs, 6 mos on Twitter | 29,299,546 | 69.1% |
| 3. |  Phil Plait@BadAstronomer SCIENCE! I love this stuff. My Bad Astronomy blog: syfy.com/badastronomy I use "likes" for bookmarks. No endorsement implied. • Bad Astronomy Boulder about.me/philplait 11 yrs, 3 mos on Twitter | 612,066 | 69.1% |
| 4. |  Emily Lakdawalla@elakdawalla Senior Editor & Planetary Evangelist, The Planetary Society. Planetary scientist, public speaker. Wrote a book on Curiosity rover. Asteroid 274860. • The Design and Engineering of Cur... Pasadena, CA planetary.org/emily 10 yrs, 2 mos on Twitter | 147,196 | 67.6% |
| 5. |  Neil deGrasse Tyson@neiltyson Astrophysicist • Accessory to War • StarTalk Young Readers Edition (S... • Welcome to the Universe New York City haydenplanetarium.org/tyson/ 9 yrs, 5 mos on Twitter | 12,713,323 | 62.2% |
| 6. |  chrislintott@chrislintott Astronomer, zookeeper and journalist, based at University of Oxford. • The Cosmic Tourist • Exploring the Mysteries of the Un... • Bang! Oxford zooniverse.org 9 yrs, 9 mos on Twitter | 28,281 | 57.9% |
| 7. |  Sarah Kendrew@sarahkendrew Astronomer with the European Space Agency. Based at the Space Telescope Science Institute in Baltimore. Astronomy, running, bikes. Opinions my own. 🇧🇪🇬🇧 Baltimore skendrew.github.io 10 yrs, 10 mos on Twitter | 7,188 | 55.9% |
| 8. |  Curiosity Rover@MarsCuriosity Your friendly neighborhood NASA Mars rover. Exploring the Red Planet since 2012. Team headquartered at NASA's Jet Propulsion Laboratory 🚀 @NASAJPL Gale Crater, Mars mars.jpl.nasa.gov/msl/ 10 yrs, 0 mos on Twitter | 3,905,060 | 55.3% |
| 9. |  Barack Obama@BarackObama Dad, husband, President, citizen. Washington, DC obama.org 11 yrs, 4 mos on Twitter | 101,367,604 | 55.0% |
| 10. |  Dr./Prof. Sarah Hörst@PlanetDr Just an Assistant Prof of Planetary Science @JohnsHopkins who is tired AF but still trying to do the damn thing. she/her Baltimore, MD, USA sarahhorst.com 9 yrs, 3 mos on Twitter | 46,483 | 55.0% |
| 11. |  David W. Hogg@davidwhogg astronomy, cosmology, stars, exoplanets, inference, engineering, data analysis, emcee, The Cannon, Astrometry.net, The Tractor, #openscience, #otherpeoplesdata New York City dwh.gg/dwhogg 7 yrs, 3 mos on Twitter | 5,651 | 53.9% |
| 12. |  Lucianne Walkowicz@shaka_lulu Chair of Astrobiology @librarycongress studying ethics of Mars exploration, astronomer @AdlerPlanet, multimedia artist. Opinions ~my own~ Washington, DC tangledfields.com 7 yrs, 5 mos on Twitter | 12,657 | 53.0% |
| 13. |  SpaceX@SpaceX SpaceX designs, manufactures and launches the world’s most advanced rockets and spacecraft. Hawthorne, CA spacex.com 9 yrs, 2 mos on Twitter | 7,115,810 | 52.7% |
| 14. |  Astrotweeps: Peter@astrotweeps Peter Boorman • @boorm • https://t.co/VbzNcThkH8 • A new astronomer/planetary scientist tweeting about space each week. The Universe astrotweeps.wordpress.com 4 yrs, 6 mos on Twitter | 9,232 | 52.7% |
| 15. |  AstroBetter@astrobetter Blog and Wiki for professional astronomers. astrobetter.com 9 yrs, 3 mos on Twitter | 4,703 | 52.7% |
| 16. |  Dr. Maria Womack@StarzanPlanets Astrophysicist & planetary scientist, USF professor #teamcomets #astrochemistry #scipolicy #planetarydefense Contains no pseudoscience Tampa, Florida mariawomack.com 8 yrs, 11 mos on Twitter | 4,354 | 52.1% |
| 17. |  Astronomy Picture Of The Day@apod Each day a different image of our universe along with a brief explanation. For issues with this account contact @astronomyblog otherwise apod.nasa.gov/apod/lib/apsub… Earth apod.nasa.gov/apod/astropix.… 10 yrs, 10 mos on Twitter | 1,291,311 | 51.6% |
| 18. |  astrobites@astrobites Digestible summaries of the latest research in astrophysics, written by graduate students. Astrobites is supported by the American Astronomical Society. All over the world astrobites.org 7 yrs, 6 mos on Twitter | 7,485 | 51.6% |
| 19. |  ★ dr amanda bauer ★@astropixie Head of Education & Public Outreach for LSST. Music creator. Co-host of #CosmicVertigo space podcast abc.net.au/radionational/… Tucson, AZ amandabauer.blogspot.com 10 yrs, 4 mos on Twitter | 9,766 | 50.7% |
| 20. |  Prof. Karen Masters 💫⭐️✨@KarenLMasters Professor of astrophysics @haverfordedu. Investigating galaxies with @GalaxyZoo @SDSSurveys. Touch a galaxy @TactileUniverse. Mostly tweeting astronomy. British Ardmore, PA icg.port.ac.uk/~mastersk 9 yrs, 4 mos on Twitter | 7,318 | 50.7% |
| 21. |  Julianne Dalcanton@dalcantonJD Astrophysicist at the University of Washington. Principal Investigator of the Panchromatic Hubble Andromeda Treasury (PHAT). 6 yrs, 6 mos on Twitter | 6,102 | 50.7% |
| 22. |  Brian Cox@ProfBrianCox I think the world needs more experts. The Earth, with everyone else apolloschildren.com 9 yrs, 7 mos on Twitter | 2,838,979 | 50.4% |
| 23. |  Sarah Tuttle@niais Astrophysicist. Vashti or Mordechai, depends on the day. Armed with wrenches & a dream. Professor. Legally & reputationally risky. 100% problematic. Feminist Dystopian Hellscape astrotuttle.wordpress.com 10 yrs, 6 mos on Twitter | 10,408 | 49.6% |
| 24. |  ESA@esa European Space Agency, keeping you posted on European space activities. Europe esa.int 9 yrs, 4 mos on Twitter | 853,391 | 49.3% |
| 25. |  Bryan Gaensler@SciBry Astronomer and Director of the @DunlapInstitute at @UofT. Science-fiction connoisseur, rugby tragic, displaced Antipodean, bewildered parent. Opinions ∉ @UofT. • Extreme Cosmos Toronto, Canada bryangaensler.net 8 yrs, 11 mos on Twitter | 7,951 | 49.3% |
| 26. |  Dr. Renée Hložek@reneehlozek South African cisgender, bisexual woman Assistant Prof. of Astrophysics, Rhodes scholar (and lover of loud karaoke), Senior TED Fellow. Feminist scientist. Toronto, Ontario reneehlozek.com 8 yrs, 11 mos on Twitter | 4,978 | 48.7% |
| 27. |  Mike Brown@plutokiller Astronomer, planet hunter, Pluto killer, bear whisperer, Finger-wrapped dad. • How I Killed Pluto and Why It Had... Pasadena, CA mikebrownsplanets.com 9 yrs, 3 mos on Twitter | 63,672 | 48.4% |
| 28. |  NASA JPL@NASAJPL NASA Jet Propulsion Laboratory manages many of NASA's robotic missions exploring Earth, the solar system and our universe. Tweets from JPL's News Office. Pasadena, Calif. jpl.nasa.gov 9 yrs, 5 mos on Twitter | 2,699,034 | 48.1% |
| 29. |  Sean Carroll@seanmcarroll Physicist and author at Caltech. Married to @JenLucPiquant. In favor of truth and kindness. Los Angeles preposterousuniverse.com 9 yrs, 4 mos on Twitter | 219,815 | 48.1% |
| 30. |  Fraser Cain@fcain Publisher of universetoday.com, co-host of astronomycast.com. Named after Asteroid 158092. Courtenay, British Columbia about.me/frasercain 11 yrs, 4 mos on Twitter | 38,284 | 48.1% |
| 31. |  Jonathan McDowell@planet4589 I'm an astronomer at the Harvard-Smithsonian Center for Astrophysics, working on Chandra and quasars, and commenting on space launches and space activities. Somerville, MA, USA planet4589.org 9 yrs, 5 mos on Twitter | 23,606 | 48.1% |
| 32. |  Molly Peeples@astronomolly Astronomer in the Science Policies Group @STScI playing with galaxies & gas, real & fake. #Hubble, #JWST, #WFIRST pay the bills; opinions are my own. She/her. Baltimore, MD, z=0 molly.science 5 yrs, 9 mos on Twitter | 5,943 | 47.6% |
| 33. |  Alyssa A. Goodman@AlyssaAGoodman Astronomy Professor at Harvard, CoDirector of Science at Radcliffe Institute. Loves data, visualization, Universe, education, people. Not in that order. Massachusetts cfa.harvard.edu/~agoodman 9 yrs, 5 mos on Twitter | 3,561 | 47.0% |
| 34. |  Elon Musk@elonmusk 9 yrs, 1 mo on Twitter | 22,264,315 | 46.7% |
| 35. |  Kelle Cruz@kellecruz Astronomy Prof at @Hunter_College, @AMNH, and #BDNYC. Liveable streets. @Spurs. Founder, editor of @AstroBetter & CEO of @ScienceBetter. Coordinator of @Astropy New York, NY astrobetter.com 9 yrs, 5 mos on Twitter | 4,661 | 46.7% |
| 36. |  MC Stardust ✨ Inclusion Rider 4 Life@Summer_Ash Astrophysicist by day and all around rock-it scientist whenever I get my act together. Tweets are my own opinions. Intersectional or GTFO. 1/2 of @startorialist Moon/New York City summerash.com 8 yrs, 3 mos on Twitter | 12,518 | 46.1% |
| 37. |  Alex Parker@Alex_Parker Planetary astronomer and artist exploring the origin and history of our solar system. Director of @ESPRESSO_SSERVI. If in doubt, I could probably laser it. Boulder, Colorado alexharrisonparker.com 9 yrs, 6 mos on Twitter | 26,053 | 45.8% |
| 38. |  Meg Urry@Meg_Urry Yale physics prof, likes supermassive black holes, teaching, writing, increasing participation in STEM, my family Yale University urrylab.yale.edu 6 yrs, 8 mos on Twitter | 4,268 | 45.8% |
| 39. |  Catherine Q.@CatherineQ Astrophysicist, science communicator, over-thinker. One of @HuffPostscience Top 30 Physicists to follow. Autoimmune illness girl. Kiwi in US. Dogs rule. USA CatherineQ.com 9 yrs, 4 mos on Twitter | 40,137 | 45.6% |
| 40. |  Brooke Simmons@vrooje Somewhat distracted astrophysicist researching galaxies & black holes; on @galaxyzoo & @the_zooniverse teams. Also planetaryresponsenetwork.org lead. San Diego, CA vrooje.github.io 9 yrs, 10 mos on Twitter | 5,707 | 45.6% |
| 41. |  Brian Schmidt@cosmicpinot An overly busy Cosmologist who is Vice Chancellor of the ANU, Wine maker, Dad & Husband. 2011 Nobel Laureate in Physics Canberra Australia msowww.anu.edu.au/~brian 8 yrs, 7 mos on Twitter | 22,723 | 44.7% |
| 42. |  Pamela L. Gay@starstryder Communicating astronomy and life in academia 1 sidereal day at a time. All opinions & ideas expressed are strictly my own. Edwardsville, IL starstryder.com 10 yrs, 5 mos on Twitter | 38,395 | 44.4% |
| 43. |  Prof. Abel Méndez@ProfAbelMendez Planetary Astrobiologist and Director of the @PlanetaryHabLab. Studying habitable worlds using the Arecibo Observatory. #exoplanets #astrobiology • Searching for Habitable Worlds Arecibo, Puerto Rico phl.upr.edu 8 yrs, 8 mos on Twitter | 13,733 | 44.4% |
| 44. |  NASA Kepler and K2@NASAKepler Launched in March 2009, Kepler is NASA's first spacecraft to detect Earth-size planets in the just-right Goldilocks habitable zone of other stars. Trailing Earth around the Sun nasa.gov/kepler 9 yrs, 7 mos on Twitter | 608,521 | 44.1% |
| 45. |  Prof. Emily Rice, Ph.D.@emilylurice Astronomer at @csinews, @GC_CUNY, @AMNH, #BDNYC, & #CUNYAstro; @AstronomyOnTap organizer, 1/2 of @startorialist, & @knitted_bd host ⭐️. Not @djcarlysagan 😜 Occupied Lunaape Land (NYC) emilylrice.me 10 yrs, 10 mos on Twitter | 4,651 | 44.1% |
| 46. |  SarcasticRover@SarcasticRover Doing a science on the red planet. Not @MarsCuriosity. Portrait by @badportraits. Written by @jfiliatrault. 4th Rock From the Sun 5 yrs, 11 mos on Twitter | 1,020,105 | 43.0% |
| 47. |  Prof. Nicole Gugliucci, Doctor of the Sky@NoisyAstronomer Professor, astronomer, education researcher, science communicator, working for equity in STEM. Geek, crossfitter, dog mom. She/her. Tweets my own, etc etc 💙💜💖 New Hampshire, USA noisyastronomer.com 10 yrs, 1 mo on Twitter | 21,072 | 43.0% |
| 48. |  Dr Michele Bannister@astrokiwi Planetary astronomer, poet, hunter of new and strange worlds. Connoisseur of fuzzy dots of light. Asteroid (10463). Research Fellow @AstroQUB. living the life non-sidereal astro.uvic.ca/~micheleb/ 9 yrs, 4 mos on Twitter | 7,244 | 43.0% |
| 49. |  CassiniSaturn@CassiniSaturn Explored Saturn, its moons and the magnificent rings. Science still in progress. Saturn, Solar System saturn.jpl.nasa.gov 10 yrs, 0 mos on Twitter | 1,626,903 | 42.7% |
| 50. |  NASA Webb Telescope@NASAWebb NASA's James Webb Space Telescope will give us an amazing look at the universe! It will launch in 2021. RT, likes, and/or @mentions do not imply endorsement. Greenbelt, Maryland jwst.nasa.gov 9 yrs, 3 mos on Twitter | 387,069 | 42.7% |
| 51. |  Alessondra Springmann@sondy asteroids, comets, sounding rockets, @AreciboRadar/🇵🇷 love, cacti, geology, autoimmune disease, puns, equity/inclusion, cat herding, rants, 小惑星レーダー天文学者, she/her Chukson / Tucson, AZ sondy.com 8 yrs, 2 mos on Twitter | 6,968 | 42.7% |
| 52. |  ESO@ESO The European Southern Observatory (ESO) is the most productive observatory in the world. Garching, Germany eso.org 9 yrs, 11 mos on Twitter | 71,003 | 42.1% |
| 53. |  ESA Rosetta Mission@ESA_Rosetta ESA spacecraft that studied Comet 67P/Churyumov-Gerasimenko & sent @philae2014 to its surface. Mission completed 30 Sep 2016. Follow @esascience for latest news rosetta.esa.int 5 yrs, 7 mos on Twitter until last tweet (2016-Sep-30) | 484,383 | 41.8% |
| 54. |  NewHorizons2015@NewHorizons2015 The First Space Mission to Explore Planet Pluto--Ride Along Via Principal Investigator Alan Stern's Private New Horizons Twitter Feed. Follow Stern @AlanStern Deeeeep Space 9 yrs, 11 mos on Twitter | 277,378 | 41.5% |
| 55. |  Dr. Jessie Christiansen@aussiastronomer NASA Research Scientist | #exoplaneteer | #WomenInStem advocate | Science curator at @NASAExoArchive | Usual nerd grab-bag of fandoms Caltech, Pasadena, CA, USA spider.ipac.caltech.edu/staff/christia/ 4 yrs, 6 mos on Twitter | 5,394 | 41.5% |
| 56. |  David Spergel@DavidSpergel Astrophysicist at Princeton University and Flatiron Institute Princeton NJ astro.princeton.edu/~dns 4 yrs, 6 mos on Twitter | 4,802 | 41.5% |
| 57. |  Peter Edmonds@PeterDEdmonds Work in astronomy publicity after surviving an astrophysics PhD & postdocs. Interested in science & scicomm. Opinions are mine & RTs aren't always endorsements. peterdedmonds.blogspot.com 6 yrs, 6 mos on Twitter | 4,079 | 41.3% |
| 58. |  Meg Schwamb@megschwamb Planetary scientist, astronomer, Gemini North assistant scientist: KBOs, Planet Four(Mars), MBCs(Comet Hunters),LSST SSSC co-chair. Opinions tweeted are my own Hilo, HI megschwamb.com 8 yrs, 2 mos on Twitter | 4,251 | 41.0% |
| 59. |  Bill Nye@BillNye Bill Nye Saves the World Season 3 Now Streaming Only on Netflix. netflix.com/billnyesavesth… 9 yrs, 2 mos on Twitter | 5,754,321 | 40.4% |
| 60. |  NASA's Juno Mission@NASAJuno Exploring Jupiter to improve our understanding of the planet's origins and the formation of planetary systems. missionjuno.org nasa.gov/juno Jupiter 9 yrs, 5 mos on Twitter | 697,737 | 39.8% |
| 61. |  Dr Rachael Livermore@rhaegal British Astrophysicist & tea lover. I critique Star Trek science at snarkyastronomer.tumblr.com Videos of my public talks at bit.ly/SciTalks Melbourne, Victoria rlivermore.com 10 yrs, 0 mos on Twitter | 5,388 | 39.8% |
| 62. |  NASA New Horizons@NASANewHorizons The New Horizons spacecraft, launched in 2006, flew past the the icy dwarf planet Pluto and its moons in July 2015. Solar System nasa.gov/mission_pages/… 3 yrs, 11 mos on Twitter | 339,391 | 39.5% |
| 63. |  Tanya Harrison@tanyaofmars 🇨🇦Professional Martian, PhD. Director of Research @asunewspace, Web Editor @exploreplanets, current/former team @[email protected]+Mars Recon Orbiter. Toronto / Phoenix tanyaofmars.com 9 yrs, 4 mos on Twitter | 18,851 | 39.5% |
| 64. |  David Charbonneau@ExoCharbonneau Exoplaneteer and Professor of Astronomy at Harvard. Girl Scout leader, hockey coach, and proud father of four daughters and future presidents. Harvard University cfa.harvard.edu/~dcharbon/Site… 4 yrs, 6 mos on Twitter | 2,942 | 39.5% |
| 65. |  Chris Hadfield@Cmdr_Hadfield Canadian Astronaut, back on Earth after 3 spaceflights. For events and media, please write to [email protected] Earth chrishadfield.ca 7 yrs, 10 mos on Twitter | 2,400,416 | 39.3% |
| 66. |  ESA Science@esascience Science @ the European Space Agency ESA, keeping you posted on European space science activities. Noordwijk, The Netherlands esa.int/science 8 yrs, 6 mos on Twitter | 286,397 | 39.3% |
| 67. |  Dr. T’Chanda Prescod-Weinstein🙅🏽♀️ 🇧🇧@IBJIYONGI #BlackandSTEM Prof of Physics Chanda P-W. also does: #HistSTM & #STS. Over the binary, tweets by/for me only, repped by @jkpapin. medium.com/@chanda Seattle/Cambridge/Wakanda cprescodweinstein.com 10 yrs, 1 mo on Twitter | 33,995 | 39.3% |
| 68. |  Sarah Ballard@hubbahubble Habitable worlds, kindness, fiction, etc. At ~75 km/s*Mpc! One half of @drssarahcare Cambridge, MA space.mit.edu/~sarahba 4 yrs, 5 mos on Twitter | 3,060 | 39.3% |
| 69. |  The SETI Institute@SETIInstitute We believe we are conducting the most profound search in human history — to know our beginnings and our place among the stars. Mountain View, CA seti.org 9 yrs, 2 mos on Twitter | 673,621 | 39.0% |
| 70. |  Planetary Society@exploreplanets Citizen-powered #space exploration led by CEO @BillNye. Join us. Pasadena, CA planetary.org 7 yrs, 9 mos on Twitter | 180,188 | 39.0% |
| 71. |  Matthew R Francis, ANTIQUACK@DrMRFrancis Writer of physics and astronomy. Wearer of jaunty hats. Tryin' to publish a novel. Proud Rebel scum. Avatar by @ScienceComic . Cleveland, OH bowlerhatscience.org 7 yrs, 10 mos on Twitter | 17,064 | 39.0% |
| 72. |  Dr Chiara Mingarelli@Dr_CMingarelli Gravitational-wave astrophysicist. Flatiron Research Fellow at @FlatironCCA. Previously @Caltech, @NASAJPL, and MPIfR. Views my own. New York, NY chiaramingarelli.com 7 yrs, 4 mos on Twitter | 5,914 | 39.0% |
| 73. |  John Asher Johnson@astrojohnjohn Sayer of words, typist of things, one who professes professionally, figurer of things out, player of basketball, abuser of language. Views expressed r mine • How Do You Find an Exoplanet? (Pr... Cambridge, MA mahalonottrash.blogspot.com/2015/05/i-am-o… 5 yrs, 5 mos on Twitter | 2,334 | 39.0% |
| 74. |  Alexandra Witze@alexwitze Correspondent for Nature, views my own. Reach me (generally) witzescience-at-gmaildotcom or (securely) awitze-at-protonmaildotcom. Boulder, CO lakithebook.com 9 yrs, 4 mos on Twitter | 18,615 | 38.7% |
| 75. |  Philae Lander@Philae2014 On 12 November 2014 I landed on comet #67P as part of @ESA_Rosetta. I am operated by @DLR_en's Lander Control Center LCC in Cologne. Interplanetary Space dlr.de/en/rosetta 7 yrs, 8 mos on Twitter | 407,029 | 38.4% |
| 76. |  Dr. Christina Richey@PlanSciCRichey Planetary Scientist/Astrophysicist, fighter 4 inclusion in STEM, love/hate relationship w/ workouts, wine drinker, making my mom proud; views are my own. Los Angeles, CA christinarichey.com 2 yrs, 10 mos on Twitter | 2,183 | 38.4% |
| 77. |  BenneHolwerda@BenneHolwerda Astronomer at large (mostly harmless). University of Louisville. Opinions & typos obv my own. Louisville, KY 10 yrs, 0 mos on Twitter | 1,585 | 38.4% |
| 78. |  Nature News & Comment@NatureNews Science news & opinion from the news team at Nature, the international journal of #science. Get our daily newsletter: go.nature.com/naturebriefing Worldwide nature.com/news 9 yrs, 11 mos on Twitter | 1,872,307 | 38.1% |
| 79. |  Nadia Drake@nadiamdrake Contributing writer @natgeo. Former ballet dancer. Slightly obsessed with planets (and MOONS), supernovas and spiders. Champagneophile. 7 yrs, 9 mos on Twitter | 25,943 | 38.1% |
| 80. |  Risa Wechsler@RisaWechsler astrophysicist. cosmologist. maker of universes and various kinds of trouble. professor of physics @ stanford San Francisco risawechsler.com 5 yrs, 10 mos on Twitter | 3,761 | 38.1% |
| 81. |  Alberto Conti@albertoconti Astrophysicist "Fight Devastating Ignorance with Facts" - Tweets are my own, at least in this multiverse. en.wikipedia.org/wiki/Alberto_C… MD, USA en.m.wikipedia.org/wiki/Alberto_C… 10 yrs, 0 mos on Twitter | 3,361 | 37.8% |
| 82. |  Universe Today@universetoday Universe Today - universetoday.com, a website about space and astronomy. Tweets are probably coming from @fcain Courtenay, British Columbia universetoday.com 9 yrs, 4 mos on Twitter | 286,256 | 37.5% |
| 83. |  Ed Yong@edyong209 Science writer at The Atlantic. Author of I CONTAIN MULTITUDES, a New York Times bestseller on animal-microbe partnerships. edyong.me Washington, DC theatlantic.com/author/ed-yong/ 9 yrs, 5 mos on Twitter | 139,059 | 37.0% |
| 84. |  Anna Frebel@annafrebel Astronomer & stellar archaeologist searching for the oldest stars in the universe (yes, they are 12-13 billion yrs old!); also professor at MIT & author • Searching for the Oldest Stars • New Horizons in Astronomy Cambridge, MA, USA annafrebel.com 5 yrs, 1 mo on Twitter | 9,379 | 37.0% |
| 85. |  Kevin Schawinski@kevinschawinski Asst Prof @ETH_en | black holes | galaxies | #citizenscience | @galaxyzoo | deep learning | co-founder @modulos_ai | space.ml Zurich, Switzerland astro.ethz.ch/schawinski 7 yrs, 5 mos on Twitter | 4,280 | 37.0% |
| 86. |  Jane MacArthur@Jane_MacArthur Planetary scientist @UniOfLeicester studying martian meteorites & comet dust. Writer @PopAstro. Fellow @RoyalAstroSoc #MetSoc2018 #RAS200 #Violinist Mars janemac.org 9 yrs, 5 mos on Twitter | 6,941 | 36.7% |
| 87. |  Hubble@NASAHubble The official Twitter account for the NASA Hubble Space Telescope, managed and operated by NASA's Goddard Space Flight Center. Goddard Space Flight Center nasa.gov/mission_pages/… 10 yrs, 4 mos on Twitter | 6,010,829 | 36.4% |
| 88. |  STARtorialist@startorialist Where science meets fashion and scientists get FABULOUS! By professional astronomers @Summer_Ash & @emilylurice. The Universe startorialist.com 4 yrs, 7 mos on Twitter | 3,838 | 36.4% |
| 89. |  DJ Dr JJ Eldridge@astro_jje NZ Astrophysicist studying exploding binary stars. Lecturer, Speaker, Sci-fi addict, feminist, trans non-binary femme, prefers them/they/she/her pro-nouns. • The Lives and Death-Throes of Mas... Auckland, New Zealand about.me/jj.eldridge 5 yrs, 2 mos on Twitter | 3,229 | 36.4% |
| 90. |  Karin Sandstrom@karinsandstrom Assistant professor of astronomy and physics. Lover of coffee, interstellar dust, California, nerdy stuff. Originally from SW Washington. San Diego, CA karinsandstrom.github.io 9 yrs, 3 mos on Twitter | 2,528 | 36.4% |
| 91. |  Nature Astronomy@NatureAstronomy A Nature journal dedicated to presenting the very best research across the disciplines of astronomy, astrophysics, cosmology and planetary science. London, England nature.com/natastron/ 2 yrs, 9 mos on Twitter | 13,271 | 36.1% |
| 92. |  New Scientist@newscientist The best place to find out what’s new in science – and why it matters. To subscribe go to: https://t.co/M4DdnmRv4N Worldwide newscientist.com 9 yrs, 5 mos on Twitter | 3,372,938 | 35.8% |
| 93. |  Niki/ @RealScientists@realscientists Real science from real scientists, writers, communicators, artists & clinicians. This week: Niki Rust | @nikirust Everywhere realscientists.org 5 yrs, 5 mos on Twitter | 66,950 | 35.8% |
| 94. |  Jedidah Isler, PhD@JedidahIslerPhD Relentless Dreamer / Astrophysicist / Science Lover / Innovator / TED Fellow / Founder & Host @VanguardSTEM / @NatGeo Emerging Explorer JedidahIslerPhD.com 7 yrs, 11 mos on Twitter | 11,488 | 35.8% |
| 95. |  Shit Academics Say@AcademicsSay A social experiment | @prof_nch chronicle.com/article/Academ… 4 yrs, 9 mos on Twitter | 287,313 | 35.5% |
| 96. |  Marc Kuchner@marckuchner PI of Citizen Science projects backyardworlds.org, diskdetective.org, Astrophysicist, Songwriter. • Marketing for Scientists Greenbelt, MD marketingforscientists.com 9 yrs, 7 mos on Twitter | 5,793 | 35.5% |
| 97. |  Mika McKinnon@mikamckinnon Field geophysicist, disaster researcher, scifi science consultant, science writer, public speaker, irrepressibly curious. West Coast about.me/mikamckinnon 9 yrs, 1 mo on Twitter | 25,498 | 35.2% |
| 98. |  Lee Billings@LeeBillings Science journalist covering space and physics for @sciam. Author of Five Billion Years of Solitude, a book on the search for alien Earths. Opinions are my own. New York City leebillings.com 9 yrs, 2 mos on Twitter | 7,951 | 35.2% |
| 99. |  Thomas Robitaille@astrofrog Freelance, software developer, lead developer of Glue, co-ordinator for the Astropy project, software Editor for AAS Publishing, open development advocate. United Kingdom thomasrobitaille.com 9 yrs, 3 mos on Twitter | 2,217 | 35.2% |
| 100. |  Dr. Phil Metzger@DrPhiltill Planetary scientist. Co-founded NASA KSC SwampWorks. Now at UCF Florida Space Institute but still on SwampWorks team. SpaceMining. Space settlement. Science. Kennedy Space Center & Orlando philipmetzger.com/blog/ 5 yrs, 7 mos on Twitter | 74,887 | 35.0% |
| 101. |  Alan Duffy@astroduff A/Professor in Astrophysics at @Swinburne and Lead Scientist of @RiAus Instagram.com/profalanduffy Melbourne alanrduffy.com 6 yrs, 0 mos on Twitter | 19,554 | 34.7% |
| 102. |  Dr Anna Watts@drannawatts Associate Professor of Astrophysics @ Univ. of Amsterdam. Neutron stars (explosions, dense matter), X-ray astronomy. Mom, Migrant. Particles in stars blah blah. Amsterdam staff.fnwi.uva.nl/a.l.watts/ 4 yrs, 1 mo on Twitter | 2,994 | 34.7% |
| 103. |  NASA Goddard@NASAGoddard Tweeting the best in astrophysics, Earth sciences, engineering, robotic exploration, Sun science, and technology for NASA's Goddard Space Flight Center. Greenbelt, MD USA nasa.gov/goddard 9 yrs, 5 mos on Twitter | 477,207 | 34.4% |
| 104. |  Robert Simpson@orbitingfrog Googler, astronomer, TED Fellow. Views are my own. UK orbitingfrog.com 11 yrs, 3 mos on Twitter | 31,604 | 34.4% |
| 105. |  David Grinspoon@DrFunkySpoon Astrobiologist, Author, Musician. New book CHASING NEW HORIZONS: Inside the Epic First Mission to Pluto. • Chasing New Horizons • Earth in Human Hands • Towards Understanding the Climate... Biosphere One funkyscience.net 6 yrs, 9 mos on Twitter | 21,782 | 34.4% |
| 106. |  Jane Rigby@janerrigby Astronomer researching black holes & galaxies, using telescopes around world & in space, helping build Webb Telescope @NASA. Queer parent geek UU.🚲 Views mine DC Metro janerigby.net 7 yrs, 6 mos on Twitter | 4,446 | 34.4% |
| 107. |  Dr. Jennifer L. Hoffman ✨@astroprofhoff Astronomer, associate professor, alto, auntie, ailurophile. University of Denver • Stellar Polimetry Denver, CO grammai.org/jhoffman/ 4 yrs, 6 mos on Twitter | 2,636 | 34.4% |
| 108. |  Royal Astronomical Society@RoyalAstroSoc The RAS is a learned society representing astronomers and geophysicists in the UK & worldwide. Tweets by @RobertMMassey, @MorganDJHollis, & @DrHelenKlus. Burlington House, London ras.ac.uk 8 yrs, 4 mos on Twitter | 27,501 | 34.1% |
| 109. |  Robert McNees@mcnees Professor, physicist, sci comm. Black holes, quantum gravity, cosmology. Tar Heel. RT = spooky action at a distance. Opinions are mine alone. Chicago, z=0 jacobi.luc.edu 10 yrs, 1 mo on Twitter | 10,958 | 34.1% |
| 110. |  Meredith Rawls@merrdiff Stellar astronomer and data management for @LSST. Also: mom, scicommer, violist, Episcopalian. Less nighttime blue light, more 24/7 equity. Keep looking up. Seattle, WA faculty.washington.edu/mrawls 8 yrs, 4 mos on Twitter | 5,130 | 34.1% |
| 111. |  Profe Jorge Moreno, PhD@astroboy_moreno NSF-Funded Theoretical Astrophysicist | Visiting Scholar at Harvard | AAS CSMA Chair | Assistant Professor at Pomona College | de-Indigenized “Latinx” | QPOC Claremont, CA jmorenosoto.wix.com/astroboy-moreno 3 yrs, 11 mos on Twitter | 1,849 | 34.1% |
| 112. |  Amber Straughn@astraughnomer Arkansas native & @NASA astrophysicist. Climate change is real. Pilot, yogini, homebrewer, Great Dane mom, @PearlJam fan, Razorback 🏈 fan, #FirstGen Tweets mine Lukin's amberstraughn.com 7 yrs, 2 mos on Twitter | 13,098 | 33.8% |
| 113. |  Jason Wright@Astro_Wright Associate Professor of Astronomy and Astrophysics at Penn State. Astronomy and meta-astronomy. Opinions are my own. State College, PA, USA sites.psu.edu/astrowright/ 5 yrs, 9 mos on Twitter | 5,809 | 33.8% |
| 114. |  Peter Coles 🌈 🇪🇺 🇮🇪 🇬🇧@telescoper Theoretical astrophysicist, specialising in cosmology, making a new home in Ireland. Also interested in jazz, opera, poetry, crosswords, cricket, etc. #FBPE • The Routledge Companion to the Ne... • From Cosmos to Chaos • Cosmology Maynooth, Co Kildare, Ireland telescoper.wordpress.com 8 yrs, 9 mos on Twitter | 5,499 | 33.8% |
| 115. |  Geert Barentsen@GeertHub NASA Astronomer in Silicon Valley • Kepler Space Telescope GO Director • Thinks Bayesian • Likes Burritos • Does not own a cat. 🚀🌯😾 #KeplerMission #K2Mission Mountain View, CA geert.io 9 yrs, 1 mo on Twitter | 2,894 | 33.8% |
| 116. |  Dr Michelle Collins@michelle_lmc Astrophysicist working on Local Group galaxies. Soft spot for Andromeda. Keen runner. All views my own. RT != endorsement Guildford, England therunningastronomer.com 9 yrs, 1 mo on Twitter | 1,514 | 33.8% |
| 117. |  Josh Peek@jegpeek Principal Investigator @MAST_News. Data Science and astronomy at @stsci and JHU. Statements do not reflect the position of any employer, obvi. Baltimore stsci.edu/~jegpeek/ 9 yrs, 5 mos on Twitter | 1,187 | 33.8% |
| 118. |  Alan Stern@AlanStern Scientist. Space Explorer. Author. Speaker, Optimist. Pilot. Dad. Not necessarily in that order. Follow my New Horizons Twitter feed @NewHorizons2015. • Chasing New Horizons • Pluto and Charon • Worlds Beyond Niwot, CO alanstern.space 9 yrs, 11 mos on Twitter | 28,028 | 33.5% |
| 119. |  Dr. Jessica Kirkpatrick@berkeleyjess Jessica Ann Kirkpatrick, Astrophysicist → Data Scientist #scientist #runner #feminist #writer #catPerson San Francisco, CA berkeleyjess.blogspot.com 9 yrs, 0 mos on Twitter | 4,885 | 33.5% |
| 120. |  CERN@CERN #CERN, the European Organization for Nuclear Research, is the world's largest particle physics lab, home of the #LHC. French: @CERN_FR Geneva home.cern 10 yrs, 0 mos on Twitter | 2,576,003 | 33.2% |
| 121. |  Carolyn Porco@carolynporco Cassini imaging lead. Visiting Scholar UC Berkeley. National Geographic Eliza Scidmore awardee. I think. I speak. I write. Opinions are my own. CA carolynporco.com 8 yrs, 11 mos on Twitter | 60,218 | 33.2% |
| 122. |  ESA Gaia@ESAGaia Science with 1 billion objects in three dimensions ESA cosmos.esa.int/gaia 9 yrs, 4 mos on Twitter | 17,565 | 33.2% |
| 123. |  Haley Gomez@astrofairy I'm an Astrophysicist, love books, films astronomy, shoes and dresses. Cardiff haley.gomez.me.uk 8 yrs, 7 mos on Twitter | 2,938 | 33.2% |
| 124. |  Elisabeth Newton@EllieInSpace NSF postdoc and stellar physicist @MIT with a passion for education and #scicomm. Also a climber, baker, crafter & @astrobites co-founder. Cambridge, MA. mit.edu/~ernewton 7 yrs, 1 mo on Twitter | 2,045 | 33.2% |
| 125. |  Grant Tremblay@astrogrant Astrophysicist at the Harvard-Smithsonian Center for Astrophysics. Previously a @NASA Einstein Fellow @Yale, Fellow @ESO, and SDAS regular @STScI. Views my own. Cambridge, MA granttremblay.com 9 yrs, 4 mos on Twitter | 1,948 | 33.2% |
| 126. |  Sophia Nasr 🏳️🌈@Astropartigirl Astroparticle physicist working on dark matter. PhD student @UCIrvine. On a mission to captivate the world w/ physics, one particle at a time. And w/ hamsters. 🐶|Los Angeles〉+ 🐹|Irvine〉 astropartigirl.com 8 yrs, 2 mos on Twitter | 16,640 | 33.0% |
| 127. |  Ethan Siegel@StartsWithABang The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, author, Forbes & NASA columnist. • Treknology • Beyond the Galaxy Portland, OR forbes.com/sites/startswi… 7 yrs, 3 mos on Twitter | 11,763 | 33.0% |
| 128. |  ✨ Emily Levesque 🏳️🌈@emsque Astronomer, writer, bizarre star enthusiast, telescope story collector. || The real exciting sound in science is not "Eureka!", it's "huh, that's weird..." • Understanding Stellar Evolution (... • Astrophysics of Red Supergiants (... Seattle, WA emlevesque.com 8 yrs, 5 mos on Twitter | 2,122 | 33.0% |
| 129. |  Dan F-M@exoplaneteer I write code for good & astrophysics. NYC dfm.io 6 yrs, 11 mos on Twitter | 2,347 | 32.7% |
| 130. |  Buzz Aldrin@TheRealBuzz 88 yrs young. Gemini 12 & Apollo 11 Astronaut & Moonwalker; West Point to USAF Colonel, Korean War veteran; Doctorate, M.I.T. Founder, Human Space Flight Inst. buzzaldrinventures.com 9 yrs, 1 mo on Twitter | 1,314,359 | 32.4% |
| 131. |  NYT Science@NYTScience Science, Medicine, Environment, Space and Cosmos. Sync your calendar with the solar system: nyti.ms/2ECMtej New York, NY nytimes.com/science 11 yrs, 4 mos on Twitter | 1,134,428 | 32.4% |
| 132. |  Prof. Lisa Harvey-Smith@lisaharveysmith Astrophysicist, Author, #WhenGalaxiesCollide, (30 July @MUPublishing), Presenter @ABCtv's #StargazingABC, Ultra-marathoner. 🌈 https://t.co/20P4INHe1M Sydney lisaharveysmith.com 6 yrs, 8 mos on Twitter | 12,031 | 32.4% |
| 133. |  Stuart@astronomyblog Maker of things. Co-author of "Cosmos: The Infographic Book of Space". Has ridden quite a long way on a bicycle. ✨🛰📕📊🌈 Yorkshire cosmos-book.github.io 11 yrs, 1 mo on Twitter | 8,144 | 32.4% |
| 134. |  Tim Peake@astro_timpeake ESA astronaut & test pilot back on Earth after 6 months in space. New book out now (proceeds to Prince's Trust): hyperurl.co/AskAnAstro Tweets are my own Cologne, Germany timpeake.esa.int 6 yrs, 3 mos on Twitter | 1,653,984 | 32.1% |
| 135. |  .Astronomy@dotastronomy Conference series about what happens when hackers, astronomers and the web all get together. Cambridge, MA, USA dotastronomy.com 10 yrs, 1 mo on Twitter | 3,937 | 32.1% |
| 136. |  Dr Erin Ryan@erinleeryan Doctor of the flying space rocks, prez of Science on Cake Appreciation Society, collector of orchid plants & stress baker. Not tweeting for any employer. The shores of the crab infested impact crater erinleeryan.com 8 yrs, 10 mos on Twitter | 2,624 | 32.1% |
| 137. |  Becky Smethurst@becky1505 Astrophysicist researching how black holes affect galaxies. I present videos for @sixtysymbols | #astronomy | #physics | #scicomm | Enthusiasm reigns here! Nottingham, UK rebeccasmethurst.co.uk 9 yrs, 3 mos on Twitter | 2,334 | 32.1% |
| 138. |  The Zooniverse@the_zooniverse The world's largest and most successful citizen science organisation. Our projects include Galaxy Zoo, Old Weather, Planet Hunters, Snapshot Serengeti & more. Zooniverse HQ zooniverse.org 8 yrs, 8 mos on Twitter | 18,937 | 31.8% |
| 139. |  Franck Marchis@AllPlanets Planetary astronomer at the SETI Institute, CSO at Unistellar, husband, dad & crossfit athlete balancing his life. Tweet about space, our planet & human rights. San Francisco franckmarchis.com 7 yrs, 10 mos on Twitter | 5,753 | 31.8% |
| 140. |  Scientific American@sciam Awesome discoveries. Expert insights. Science that shapes the world. New York City, NY, USA scientificamerican.com 10 yrs, 2 mos on Twitter | 3,662,545 | 31.5% |
| 141. |  Bobak Ferdowsi@tweetsoutloud Explorer of space. Engineer on NISAR Earth Science & Europa Clipper. Mars Curiosity, Cassini Saturn. Cat dad. Self-opinioned. Pasadena, CA instagram.com/tweetsoutloud 8 yrs, 11 mos on Twitter | 121,317 | 31.5% |
| 142. |  LIGO@LIGO Official Twitter of the LIGO Scientific Collaboration. We detect gravitational waves! YouTube: youtube.com/ligovirgo Livingston, LA and Hanford, WA ligo.org 10 yrs, 1 mo on Twitter | 82,344 | 31.5% |
| 143. |  Prof. Lucie Green@Dr_Lucie Royal Society University Research Fellow, Professor of Physics at UCL. Staring at the Sun & beyond. Chief Stargazer @popastro. New book: amzn.to/2nitfmi UK luciegreen.com 8 yrs, 1 mo on Twitter | 19,204 | 31.5% |
| 144. |  Woman Astro@womanastronomer Promoting astronomy, encouraging women/girls interested in science. WomanAstro.com, etsy.com/shop/WomanAstro New Mexico, USA WomanAstronomer.com 8 yrs, 7 mos on Twitter | 4,903 | 31.5% |
| 145. |  Johanna@johannateske Astronomer, runner, educator, feminist, vegan, baker, #Nats fan Pasadena, CA johannateske.virb.com 4 yrs, 6 mos on Twitter | 1,859 | 31.5% |
| 146. |  Adam Burgasser@browndwarfs astrophysicist, professor, and preferably in the water. on a plane, or San Diego pono.ucsd.edu/~adam 7 yrs, 11 mos on Twitter | 1,693 | 31.5% |
| 147. |  Ian O'Neill@astroengine Recovering British astrophysicist, @AstroSocietyPac Mercury editor, science writer and communicator. #atheist #skeptic #scicomm #eveonline Woodland Hills, Los Angeles astroengine.com 9 yrs, 11 mos on Twitter | 35,923 | 31.2% |
| 148. |  Overheard On Astroph@OverheardOnAph Eavesdropping on tex-source comments in papers posted to astro-ph 9 mos on Twitter until last tweet (2014-Oct-21) | 2,269 | 31.2% |
| 149. |  Ruth Angus@ruthangus Researching exoplanets & rebugging in python. Oxford, UK ruthang.us 7 yrs, 2 mos on Twitter | 1,461 | 31.2% |
| 150. |  ESA Operations@esaoperations From Earth orbit to deep space: sharing the excitement of realtime mission operations at ESA 🚀🕹️ Darmstadt, Germany esa.int/operations 9 yrs, 8 mos on Twitter | 244,710 | 30.9% |
| 151. |  Corey S. Powell@coreyspowell Science writer on @BillNyeSaves. Contributing editor at @aeonmag, @discovermag, and @AmSciMag. Science-curious. Brooklyn, NY discovermagazine.com/outthere 9 yrs, 4 mos on Twitter | 72,393 | 30.9% |
| 152. |  Jason Major@JPMajor Space. Planets. NASA. Science. Rocketry. Astronomy. Democracy. Nature. Birds. Coffee. Occasionally funny. Sometimes I make pictures. Follow for space goodness. Warwick, RI lightsinthedark.com 8 yrs, 6 mos on Twitter | 26,355 | 30.9% |
| 153. |  Astro Union@IAU_org Founded in 1919, the International Astronomical Union (IAU) promotes and safeguards the science of astronomy through international cooperation. iau.org 4 yrs, 1 mo on Twitter | 5,683 | 30.9% |
| 154. |  Jesse Shanahan@Enceladosaurus Astrophysicist studying bulgeless galaxies & writing about space & linguistics for @Forbes. EMT. Cofounded @AAS_WGAD, creator of #disabledandSTEM. #EDS Stolen Manahoac Land enceladosaur.us 7 yrs, 1 mo on Twitter | 4,823 | 30.9% |
| 155. |  Science Magazine@sciencemagazine The world's leading outlet for cutting-edge research in all areas of science. Follow @NewsfromScience for stories from our news team. Washington, DC & Cambridge, UK sciencemag.org 9 yrs, 3 mos on Twitter | 1,160,947 | 30.7% |
| 156. |  BlackPhysicists@BlackPhysicists Arlington, VA and Worldwide 9 yrs, 1 mo on Twitter | 18,168 | 30.7% |
| 157. |  Sloan Digital Sky Surveys@sdssurveys Tweeting about mapping the Universe @APOGEEsurvey @eBOSSurvey @MaNGASurvey Apache Point Observatory. sdss.org 5 yrs, 5 mos on Twitter | 3,533 | 30.7% |
| 158. |  Phil Marshall@drphilmarshall Astrophysicist, into cosmology, gravitational lenses and inference. This is the closest thing I have to a research blog. I'll write more if you tweet at me. San Francisco slac.stanford.edu/~pjm 9 yrs, 2 mos on Twitter | 1,507 | 30.7% |
| 159. |  Rogue NASA@RogueNASA The unofficial "Resistance" team of NASA. Not an official NASA account. Not managed by gov't employees. Come for the facts, stay for the snark. Washington, DC 1 yr, 5 mos on Twitter | 875,553 | 30.4% |
| 160. |  Science Friday@scifri Brain fun for curious people. Hosted by @iraflatow. From @WNYCStudios. New York, New York sciencefriday.com 9 yrs, 9 mos on Twitter | 761,275 | 30.4% |
| 161. |  Emily Petroff@ebpetroff Astronomer. Reader. Random number generator. I study things that go bang. The Netherlands ebpetroff.com 5 yrs, 0 mos on Twitter | 4,373 | 30.4% |
| 162. |  David Kipping@david_kipping Exoplanets & Exomoons, Columbia University, Cool Worlds Lab • The Transits of Extrasolar Planet... Manhattan, NY coolworlds.astro.columbia.edu 9 yrs, 4 mos on Twitter | 3,183 | 30.4% |
| 163. |  Hannah Wakeford@StellarPlanet Giacconi Fellow @STScI/@AURADC , @exo_cast podcaster & @BSACDIVER | Previously @NASAGoddard Fellow & @UniofExeter PhD | Expressed opinions are mine stellarplanet.org 6 yrs, 9 mos on Twitter | 2,209 | 30.4% |
| 164. |  James Davenport@jradavenport Astronomy PhD, [v/b]logger, casual data analyst, Seattleite. All opinions are my own. jradavenport.github.io 6 yrs, 2 mos on Twitter | 2,157 | 30.4% |
| 165. |  HUBBLE@HUBBLE_space The official feed of ESA/Hubble. The Hubble Space Telescope is the space-based observatory which has revolutionised modern astronomy. space spacetelescope.org 8 yrs, 2 mos on Twitter | 554,527 | 30.1% |
| 166. |  NASA's Dawn Mission@NASA_Dawn The only spacecraft to orbit one solar system target, Vesta, and then orbit another: Ceres! Thx ion propulsion. Dawn's Communications team the main asteroid belt dawn.jpl.nasa.gov 8 yrs, 8 mos on Twitter | 222,200 | 30.1% |
| 167. |  Nancy Atkinson@Nancy_A Science journalist, @universetoday & @Seeker. Author of the book "Incredible Stories From Space" Minnesota nancyatkinson.com 10 yrs, 0 mos on Twitter | 11,445 | 30.1% |
| 168. |  Natalie Batalha@nbatalha Eukaryote on planet Earth using self-awareness and empathy to experience love and seek knowledge. Astronomer involved in search for life on exoplanets. Silicon Valley, California 9 yrs, 5 mos on Twitter | 5,508 | 30.1% |
| 169. |  Jason Kalirai@JasonKalirai Sikh-Canadian @NASA Astrophysicist & Project Scientist @STScI. Husband & father of 4-MMSJS. Fan of Hubble, JWST, WFIRST, LSST, Cowboys football. Tweets mine. Highland, MD jasonkalirai.com 7 yrs, 0 mos on Twitter | 2,301 | 30.1% |
| 170. |  Jackie Faherty@jfaherty Astrophysicist at @AMNH. Enthusiast for bringing the cosmos to the public @backyardworlds #womeninscience #BDNYC #manhattanhenge calculator. #scicomm jackiefaherty.com 9 yrs, 4 mos on Twitter | 3,821 | 29.8% |
| 171. |  Scott Kelly@StationCDRKelly scottkelly.com Houston, TX 8 yrs, 11 mos on Twitter | 5,796,536 | 29.5% |
| 172. |  WIRED Science@WIREDScience Bringing the radiothermally generated heat. The team: @KatieMPalmer, @JetJocko, @rtg0nzalez, @MeganMolteni, and @MrMattSimon. San Francisco, California wired.com/category/wired… 10 yrs, 9 mos on Twitter | 2,012,524 | 29.5% |
| 173. |  NOT ALT WORLD@NotAltWorld The #Resistance team against #AltFacts #FauxNews #FauxScience Formerly: Unofficial National Park Service #Science #Climate #Facts Run by non-gov individuals Worldwide 1 yr, 9 mos on Twitter until last tweet (2017-Feb-07) | 1,179,366 | 29.5% |
| 174. |  Sky & Telescope@SkyandTelescope The Essential Guide to Astronomy | We provide the world's leading compendium of information about the science and hobby of astronomy. Cambridge, Mass. skyandtelescope.com 9 yrs, 4 mos on Twitter | 102,075 | 29.5% |
| 175. |  Brian Keating@DrBrianKeating Physics Professor @UCSanDiego. @SimonsObs Director. Speaker (@TEDx, @GoogleTalks, & @PragerU). Author of LOSING THE NOBEL PRIZE amzn.to/2sa5UpA (@wwnorton) San Diego, CA briankeating.com 7 yrs, 9 mos on Twitter | 7,296 | 29.5% |
| 176. |  Katey Alatalo@astrokatey Ph.D. astronomer at STScI, currently housed at Carnegie. Space is amazing! My views are my own. Pasadena, CA stsci.edu/~kalatalo/ 10 yrs, 1 mo on Twitter | 3,596 | 29.5% |
| 177. |  James Bullock@jbprime Professor and Chair, Department of Physics & Astronomy, UC Irvine. Cosmologist, Anteater, and Buckeye. California, USA physics.uci.edu/~bullock/ 8 yrs, 11 mos on Twitter | 3,141 | 29.5% |
| 178. |  Samantha Cristoforetti@AstroSamantha Samantha Cristoforetti. European of Italian nationality. Lived on ISS Nov'14-Jun'15. Now adjusting back to being an Earthling on our beautiful spaceship Earth. Europe samanthacristoforetti.esa.int 7 yrs, 0 mos on Twitter | 984,872 | 29.2% |
| 179. |  Jonathan Amos@BBCAmos BBC Science Correspondent Cambridge, UK bbcnews.com 8 yrs, 6 mos on Twitter | 41,258 | 29.2% |
| 180. |  Jennifer Ouellette@JenLucPiquant Jen-Luc Piquant is the faux-French avatar of science writer Jennifer Ouellette. Past Gizmodo science editor. Ex-evangelical. Married to @seanmcarroll. Los Angeles, CA jenniferouellette-writes.com 8 yrs, 3 mos on Twitter | 34,552 | 29.2% |
| 181. |  SPACE.com@SPACEdotcom News coverage and conversation about space science, astronomy and exploration. Part of @Purch NYC SPACE.com 10 yrs, 0 mos on Twitter | 749,907 | 28.9% |
| 182. |  TrueSciPhi@TrueSciPhi A window on science, mathematics, and philosophy communities on Twitter and YouTube, by Kelly Truelove. See site for more. Austin, Texas TrueSciPhi.org 3 yrs, 1 mo on Twitter | 4,737 | 28.9% |
| 183. |  Dr Megan Argo@AstroMeg By day: just another transient astronomer. By night: samba drumming, rock climbing, public speaker, teacher and science advocate. facebook.com/DrMeganArgo Planet Earth drmeganargo.net 9 yrs, 4 mos on Twitter | 3,520 | 28.9% |
| 184. |  Spirit and Oppy@MarsRovers Roving the Red Planet on six wheels since Jan 2004. The official mission Twitter of the Spirit and Opportunity rovers. Mars: Gusev Crater & Meridiani marsrovers.jpl.nasa.gov 10 yrs, 0 mos on Twitter | 427,382 | 28.7% |
| 185. |  PHD Comics@PHDcomics Life (or the lack thereof) in Academia. Check out our 20th Anniversary Kickstarter phdcomics.com/kickstarter 9 yrs, 11 mos on Twitter | 203,145 | 28.7% |
| 186. |  Jeff Foust@jeff_foust Senior writer, @SpaceNews_Inc. You know the drill: retweets aren't endorsements; opinions here are my own. Rockville, Maryland, USA jfoust.com 11 yrs, 1 mo on Twitter | 32,041 | 28.7% |
| 187. |  Daniel Fischer@cosmos4u All things astronomy and space (and then some) - in tiny bits and pieces but mostly with links to more ... :-) Königswinter, Germany skyweek.wordpress.com 9 yrs, 9 mos on Twitter | 12,629 | 28.7% |
| 188. |  Joss Bland-Hawthorn@JossBlandHawtho All things novel, astrophysical, mathematical, technological. • The Origin of the Galaxy and Loca... • The Galaxy Disk in Cosmological C... Sydney, Australia physics.usyd.edu.au/~jbh/ 4 yrs, 1 mo on Twitter | 1,735 | 28.7% |
| 189. |  Erik Tollerud@eteq Astrophysicist, Python coder, and general lover of nature in all its forms. Opinions are my own. Baltimore, MD stsci.edu/~etollerud 9 yrs, 1 mo on Twitter | 1,324 | 28.7% |
| 190. |  Jim Al-Khalili@jimalkhalili Theoretical physicist, author, broadcaster, humanist, Jedi Master-- The Universe doesn't have a purpose, free will is an illusion, quantum physics is beautiful. University of Surrey jimal-khalili.com 8 yrs, 6 mos on Twitter | 116,820 | 28.4% |
| 191. |  Marek Kukula@marekkukula Space stuff • The Scientific Secrets of Doctor ... 7 yrs, 11 mos on Twitter | 5,112 | 28.4% |
| 192. |  Jonathan Fortney@jjfplanet @ucsc Professor & Director of Other Worlds Laboratory. Modeler of planetary atmospheres & interiors. Father, Softballer, Runner, Human Selfie Stick, Minnesotan Santa Cruz, CA owl.ucsc.edu 6 yrs, 5 mos on Twitter | 2,014 | 28.4% |
| 193. |  President Obama@POTUS44 This is an archive of an Obama Administration account maintained by the National Archives and Records Administration (NARA). Washington, D.C. obamalibrary.gov/research/archi… 3 yrs, 7 mos on Twitter until last tweet (2017-Jan-20) | 14,923,692 | 28.1% |
| 194. |  National Science Foundation@NSF Where Discoveries Begin. Social media policy: bit.ly/smpnsf Alexandria, VA nsf.gov 9 yrs, 10 mos on Twitter | 1,074,312 | 28.1% |
| 195. |  DNLee@DNLee5 #NewProf, Mammalogist, Diversity & Access to STEM, Unapologetically Intersectional, Mama Panyabuku, TED Fellow, NatGeo Emerging Explorer, #DispatchesDNLee Midwest, US; Tanzania, Africa openexplorer.nationalgeographic.com/expedition/dnl… 7 yrs, 11 mos on Twitter | 27,723 | 28.1% |
| 196. |  LSST Astronomy@LSST The widest, fastest, deepest eye of the new digital age. Cerro Pachon, Chile lsst.org 9 yrs, 11 mos on Twitter | 4,213 | 28.1% |
| 197. |  Jo Dunkley@j_dunkley Professor of Physics and Astrophysics at Princeton • Our Universe Princeton, NJ physics.princeton.edu/~jdunkley 6 yrs, 9 mos on Twitter | 2,016 | 28.1% |
| 198. |  AAS CSWA@AAS_Women The American Astronomical Society Committee on the Status of Women in Astronomy works to improve the status of women in astronomy. Page manager Nancy Morrison. United States aas.org/cswa/ 6 yrs, 7 mos on Twitter | 1,780 | 28.1% |
| 199. |  Institute of Physics@PhysicsNews The Institute of Physics is a leading scientific membership society working to advance physics for the benefit of all. UK iop.org 9 yrs, 2 mos on Twitter | 163,797 | 27.8% |
| 200. |  Stuart Clark@DrStuClark Astronomer, journalist, author. The Sky's Dark Labyrinth. Writes Across the Universe for The Guardian. Co-hosts The Stuniverse podcast. Dyed-in-the-wool progger • The Unknown Universe • Is There Life On Mars? • Little Moon London stuartclark.com 9 yrs, 2 mos on Twitter | 35,677 | 27.8% |
| 201. |  Matt Taylor@mggtTaylor I work at ESA on the Rosetta mission. 501st Dutch Garrison TK67676 EIB Netherlands 5 yrs, 9 mos on Twitter | 34,403 | 27.8% |
| 202. |  Alan Boyle@b0yle Aerospace and science editor @GeekWire. Longtime blogger @CosmicLog. Author of "The Case for Pluto." Links/RTs ≠ endorsements Seattle geekwire.com/author/alanboy… 10 yrs, 4 mos on Twitter | 32,982 | 27.8% |
| 203. |  Upulie Divisekera@upulie Molecular Biologist, Nanotechnologist| Space | Astropalaeontology | Co-founder, @realscientists | Dinosaur Evangelist | Naarm, Australia 7 yrs, 10 mos on Twitter | 32,418 | 27.8% |
| 204. |  James Tuttle Keane@jtuttlekeane JCPA Postdoc at Caltech. Studying planetary gravity, rotation, and tides. Occasional artist. Owner of Cheesecake and Poppy, the dogs. Pasadena, CA jamestuttlekeane.com 4 yrs, 3 mos on Twitter | 4,450 | 27.8% |
| 205. |  Andy Rivkin@asrivkin Planetary astronomer on #TeamAsteroid; Gedankenband member and guitarist; Persistently Obstreperous. #USAstronomyGoodwillAmbassador ⊗ imperturbable-music.blogspot.com 10 yrs, 1 mo on Twitter | 3,963 | 27.8% |
| 206. |  Elizabeth Tasker@girlandkat UK astrophysicist working at the Japan Aerospace Exploration Agency (JAXA). Author of 'The Planet Factory', published by @sigmascience (views are my own~) • The Planet Factory Japan about.me/elizabethtasker 6 yrs, 8 mos on Twitter | 2,443 | 27.8% |
| 207. |  Andy Lawrence@e_astronomer Quasar fan and survey nut. Check out random Milky Way snaps @MilkyWayBot, Oculus/Stellarium project @StarsightVR and its crowdfunder crowdfunder.co.uk/starsight-vr/ • Astronomical Measurement Auld Reekie roe.ac.uk/~al 8 yrs, 3 mos on Twitter | 2,029 | 27.8% |
| 208. |  Lego Academics@LegoAcademics The female academics of the Lego Research Institute take on the challenges of modern academia. CC-BY-NC-SA Lego Research Institute ideas.lego.com/projects/83039 3 yrs, 11 mos on Twitter | 74,223 | 27.5% |
| 209. |  galaxyzoo@galaxyzoo It's Galaxy Zoo! galaxyzoo.org 9 yrs, 6 mos on Twitter | 13,488 | 27.5% |
| 210. |  AAS Press Office@AAS_Press Astronomy news from the Press Office of the American Astronomical Society, managed by Dr. Rick Fienberg. Note: Tweeting is not endorsing, only informing. aas.org/media-press 7 yrs, 8 mos on Twitter | 4,790 | 27.5% |
| 211. |  Dr Jen Gupta@jen_gupta Space nerd. @UoPCosmology astronomy outreach. @SeldomSirius podcaster. @TWBBC Live presenter. @WinSciFest. Active Galaxies were my 1st love. Own views [she/her] Winchester, UK jengupta.com 8 yrs, 11 mos on Twitter | 4,097 | 27.5% |
| 212. |  AAS Executive Office@AAS_Office The mission of the American Astronomical Society (AAS) is to enhance & share humanity's scientific understanding of the universe. Washington, DC, USA aas.org 7 yrs, 8 mos on Twitter | 2,709 | 27.5% |
| 213. |  Benjamin Pope@fringetracker Astronomer - he/him Manhattan, NY benjaminpope.github.io 5 yrs, 6 mos on Twitter | 2,454 | 27.5% |
| 214. |  John Grunsfeld@SciAstro Former lead for Science at NASA (Associate Administrator) Astronaut STS-67,81,103,109,125 Hubble Hugger, Space and Earth explorer go.nasa.gov/johngrunsfeld 6 yrs, 5 mos on Twitter | 32,389 | 27.2% |
| 215. |  Karen James@kejames rogue scientist*, outdoorswoman, feminist • genetics, evolution, molecular ecology, botany, space, #citizenscience *formerly @mdibl & @nhm_london Bar Harbor, ME 9 yrs, 8 mos on Twitter | 28,320 | 27.2% |
| 216. |  Sara Seager@ProfSaraSeager Prof. Seager is an astrophysicist and planetary scientist at MIT. A pioneer in the vast world of exoplanets, she's on a quest for the holy grail: another Earth. • Exoplanets (Space Science Series) • Exoplanet Atmospheres Cambridge, MA seagerexoplanets.mit.edu 7 yrs, 9 mos on Twitter | 6,863 | 27.2% |
| 217. |  Emily Baldwin@AstroEmz Space Science Editor at EJR-Quartz for ESA, based at ESTEC. Tweets about space, running, coffee. Opinions own. Leiden, Netherlands 9 yrs, 4 mos on Twitter | 4,898 | 27.2% |
| 218. |  Andrew Pontzen@apontzen I do cosmology. Employed by UCL, funded by the Royal Society. Tweeting in a personal capacity: it’s no-one else’s fault when I talk nonsense. London cosmocrunch.co.uk 7 yrs, 11 mos on Twitter | 3,110 | 27.2% |
| 219. |  SAO/NASA ADS@adsabs adsabs.harvard.edu 7 yrs, 6 mos on Twitter | 2,140 | 27.2% |
| 220. |  Adrian Price-Whelan@adrianprw astrophysics postdoc @ Princeton, galaxy dynamics, binary stars, music github.com/adrn ??? adrian.pw 7 yrs, 1 mo on Twitter | 1,607 | 27.2% |
| 221. |  Astronomy Meetings@astromeetings Sharing astronomy meeting twitter links. Send me your conference title, #tag and url, **when the meeting starts**, and I'll RT to distribute. @AstroRJS 4 yrs, 2 mos on Twitter | 1,219 | 27.2% |
| 222. |  Hillary Clinton@HillaryClinton 2016 Democratic Nominee, SecState, Senator, hair icon. Mom, Wife, Grandma x2, lawyer, advocate, fan of walks in the woods & standing up for our democracy. New York, NY onwardtogether.org 5 yrs, 3 mos on Twitter | 23,113,407 | 26.9% |
| 223. |  Amy Mainzer@AmyMainzer Scientist Jet Propulsion Laboratory science.jpl.nasa.gov/people/Mainzer/ 5 yrs, 5 mos on Twitter | 26,200 | 26.9% |
| 224. |  Arfon Smith@arfon Head of Data Science @stsci. Ex GitHubber. Zooniverse co-founder. Editor-in-chief of The Journal of Open Source Software. Baltimore, MD arfon.org 11 yrs, 6 mos on Twitter | 4,004 | 26.9% |
| 225. |  Astropy@astropy This is the official twitter account for the Astropy project. Earth astropy.org 6 yrs, 11 mos on Twitter | 2,487 | 26.9% |
| 226. |  Stephen Serjeant@StephenSerjeant Astronomy Prof at the Open University, sometimes roped into OU/BBC stuff. 26.2mi=42.2km.Remainer. Likes often=bookmarks. Views here do not necessarily blah blah • An Introduction to Galaxies and C... • Observational Cosmology 127.0.0.1 stephenserjeant.wikispaces.com 9 yrs, 3 mos on Twitter | 2,180 | 26.9% |
| 227. |  Dr Jonathan Pritchard@jr_pritchard Imperial astrophysicist and bewildered vagabond. Reader. SKA enthusiast. @ERC_research funded (opinions mine, not employer's) Richmond, London imperial.ac.uk/people/j.pritc… 7 yrs, 6 mos on Twitter | 1,596 | 26.9% |
| 228. |  Guardian Science@guardianscience Science, health and environment news from the @Guardian. Plus, independent comment and analysis from our network of expert science bloggers London theguardian.com/science 9 yrs, 4 mos on Twitter | 1,066,450 | 26.6% |
| 229. |  The Royal Society@royalsociety The Royal Society is a Fellowship of the world's most eminent scientists and is the oldest scientific academy in continuous existence. fb.com/theroyalsociety London, UK royalsociety.org 9 yrs, 3 mos on Twitter | 189,526 | 26.6% |
| 230. |  History of Astronomy@HistAstro Multidisciplinary & multicultural history of astronomy #histastro by @VoulaSaridakis, Ph.D. | Curator, Museum of Science and Industry, Chicago @msichicago. All tweets/views/opinions mine 3 yrs, 4 mos on Twitter | 19,531 | 26.6% |
| 231. |  NRAO@TheNRAO The National Radio Astronomy Observatory is a facility of the National Science Foundation. Social media policy: bit.ly/2qNhpB3 Charlottesville, VA nrao.edu 9 yrs, 9 mos on Twitter | 15,408 | 26.6% |
| 232. |  Shannon Stirone@shannonmstirone Freelance writer. Art Historian. I like planets. Bylines @PopSci @DiscoverMag @Wired @TheAtlantic @NewRepublic, & others. Opinions are mine. 📡 Endor shannonstirone.com 3 yrs, 11 mos on Twitter | 9,979 | 26.6% |
| 233. |  ★ Colin Stuart ★@skyponderer Astronomy author & speaker. Get a free e-book @ bit.ly/2zjaIee. See www for signed books, keynotes & school talks. Asteroid (15347) Colinstuart • How to Live in Space • Fabulous Figures and Cool Calcula... • Astonishing Atoms and Matter Mayh... London colinstuart.net 9 yrs, 7 mos on Twitter | 5,860 | 26.6% |
| 234. |  Robert Massey@RobertMMassey Dad, diminutive, Deputy Executive Director @royalastrosoc, trustee @lightyear_fdn. RTs and likes not endorsements, views expressed my own. Instagram @massey2949 Bristol (Southville) & London 8 yrs, 11 mos on Twitter | 2,704 | 26.6% |
| 235. |  John O'Meara@astronomeara Father, Astronomer, teacher, science policy nerd, VT craft beer fan. Cosmic Origins Science Lead for #LUVOIR Member AAAC, Vice Chair COPAG EC. Tweets are my own Essex Junction, Vermont 8 yrs, 10 mos on Twitter | 1,136 | 26.6% |
| 236. |  HubbleTelescope@HubbleTelescope News from the Hubble Space Telescope operated by @stsci hubblesite.org/news 10 yrs, 0 mos on Twitter | 127,884 | 26.4% |
| 237. |  SquareKilometreArray@SKA_telescope The SKA will be the world's largest radio telescope, located in Africa & Australia. Tweets from the SKA Global Headquarters @jodrellbank. Jodrell Bank (UK) skatelescope.org 7 yrs, 9 mos on Twitter | 18,958 | 26.4% |
| 238. |  Meg Rosenburg@trueanomalies planetary science PhD | #scicomm & #histSTM | freelancer, filmmaker, podcaster | megrosenburg.com | And what you do, do it unfeignedly. Somerville, MA megrosenburg.com 5 yrs, 7 mos on Twitter | 5,125 | 26.4% |
| 239. |  Jill Tarter@jilltarter Earthling, chief cheerleader for SETI, setiQuest, and the Allen Telescope Array Jack's wife - Shana's mom - Li Yao and Clara's grandma Earth in the Cosmos setistars.org 9 yrs, 4 mos on Twitter | 4,402 | 26.4% |
| 240. |  Radio Astrology@RadioAstrology Opening new windows in the prediction spectrum. Astrology at long wavelengths. In the stars (and the ISM) 6 yrs, 8 mos on Twitter | 3,438 | 26.4% |
| 241. |  Awesome_Ph@Awesome_Ph The most awesome(st) of Astro-ph every day! Few one line summaries of papers on the ArXiV that caught my attention. Brought to you by the Extronomer. 7 yrs, 2 mos on Twitter | 1,931 | 26.4% |
| 242. |  Eric Mamajek@EricMamajek astronomer, dad, reader of stellar tea leaves, searcher of extrasolar needles in haystacks. My tweets are my own. Pasadena, CA 7 yrs, 5 mos on Twitter | 1,823 | 26.4% |
| 243. |  Caitlin Casey@astrocaits Astronomer and Assistant Professor at the University of Texas at Austin. Austin, TX as.utexas.edu/~cmcasey 4 yrs, 5 mos on Twitter | 1,267 | 26.4% |
| 244. |  NASA Voyager@NASAVoyager The official account for NASA’s twin Voyager 1 & 2 spacecraft, the longest operating spacecraft in deep space. 🛰 Mission team headquartered at @NASAJPL Interstellar space voyager.jpl.nasa.gov 7 yrs, 10 mos on Twitter | 498,055 | 26.1% |
| 245. |  Amy Shira Teitel@astVintageSpace SPACEFLIGHT HISTORIAN. Book: bit.ly/astbtcog. Vintage Space: bit.ly/vintagespace. Patreon: patreon.com/amyshirateitel PAO = my PAO. Los Angeles, CA youtube.com/vintagespace 7 yrs, 7 mos on Twitter | 244,564 | 26.1% |
| 246. |  Lisa Randall@lirarandall Physicist and author. Dark Matter and the Dinosaurs,Warped Passages,Knocking on Heaven's Door,Higgs Discovery. Opinions expressed are not solely my own. 7 yrs, 6 mos on Twitter | 56,542 | 26.1% |
| 247. |  Kristin Block@MarsMaven Spacecraft pro, taiko player, bassist, percussionist. Miami-Tucson-Bay Area. (Not affiliated with the mission @Maven2Mars!) Opinions my own and queer. San Jose, CA 9 yrs, 1 mo on Twitter | 3,315 | 26.1% |
| 248. |  Matthew Kenworthy@mattkenworthy Associate Professor of Astronomy at Leiden Observatory - looking for exoplanets and giant rings, and develops instrumentation to find them. Opinions are my own. Leiden, The Netherlands kenworthy.space 7 yrs, 9 mos on Twitter | 1,330 | 26.1% |
| 249. |  Dianna Cowern@thephysicsgirl Assume a spherical cowern in a vacuum... kauai-grown, #MIT physics, YouTube videos. Pls respond to tweets w bad puns. San Diego youtube.com/physicsgirl 6 yrs, 3 mos on Twitter | 81,556 | 25.8% |
| 250. |  Dr Tabetha Boyajian@tsboyajian Assistant professor of Astrophysics at #LSU. disrupter of astrophysics; #BoyajiansStar #TabbysStar; all posts here are my own • Extrasolar Planets and Their Host... Baton Rouge, LA wherestheflux.com 8 yrs, 11 mos on Twitter | 9,494 | 25.8% |
| 251. |  Kim Kowal Arcand@kimberlykowal Visualization lead for @chandraxray; Latest science book: “Magnitude: The Scale of the Universe." Opinions=my own 🛰️https://t.co/jHO1Tw8JYW RI, USA chandra.si.edu 10 yrs, 4 mos on Twitter | 7,943 | 25.8% |
| 252. |  Mark McCaughrean@markmccaughrean Senior Advisor for Science & Exploration at the European Space Agency. Well aware of the (in)significance of being recycled starstuff. Opinions very much own. • The Origins of Stars and Planets • The Origins of Stars and Planets Wassenaar, The Netherlands 2 yrs, 11 mos on Twitter | 4,650 | 25.8% |
| 253. |  Intl. Space Station@Space_Station NASA's page for updates from the International Space Station, the world-class lab orbiting Earth 250 miles above. For the latest research, follow @ISS_Research. Low Earth Orbit nasa.gov/station 5 yrs, 1 mo on Twitter | 2,208,285 | 25.5% |
| 254. |  Dr. Brian May@DrBrianMay Rocket Ship Builder 🚀🚀🚀🚀🚀 brianmay.com 5 yrs, 9 mos on Twitter | 755,545 | 25.5% |
| 255. |  Priyamvada Natarajan@SheerPriya @Yale astrophysicist, works on exotica in the universe: dark matter, black holes; Author: Mapping the Heavens • https://t.co/DuzePWpq2N • Mapping the Heavens • The Shapes Of Galaxies and their ... New Haven, CT amazon.com/gp/aw/d/030020… 2 yrs, 4 mos on Twitter | 8,625 | 25.5% |
| 256. |  Carnegie Astronomy@CarnegieAstro Bringing you astronomy from The Carnegie Institution for Science: The Observatories in Pasadena, CA, DTM in Washington DC, and Las Campanas Observatory in Chile Pasadena, CA bit.ly/CarnegieAstro 3 yrs, 5 mos on Twitter | 5,174 | 25.5% |
| 257. |  NASA Kennedy / KSC@NASAKennedy Official Tweets from NASA's Kennedy Space Center Florida, USA nasa.gov/kennedy 9 yrs, 9 mos on Twitter | 1,407,032 | 25.2% |
| 258. |  ESA Planck@Planck A European Space Agency (ESA) spacecraft to understand the origin and evolution of our Universe L2: 1,000,000 miles from Earth esa.int/planck 10 yrs, 1 mo on Twitter | 47,386 | 25.2% |
| 259. |  Ariel Waldman@arielwaldman NASA advisor + author of amzn.to/1MFUEVC + founder of Spacehack.org + global director @ScienceHackDay + youtuber youtube.com/arielwaldman San Francisco arielwaldman.com 11 yrs, 4 mos on Twitter | 31,827 | 25.2% |
| 260. |  Chris North@chrisenorth Lecturer & astronomer @CardiffPHYSX. Co-author of cosmos-book.github.io + other books, semi-regular broadcaster. Comments own. [he/his] • The Sky at Night • Cosmos • How to Read the Solar System Cardiff (normally) blogs.cardiff.ac.uk/chrisnorth 8 yrs, 9 mos on Twitter | 5,321 | 25.2% |
| 261. |  JC Holbrook@astroholbrook Astrophysicist, Filmmaker, Cultural Astronomer. Hubble's Diverse Universe on Amazon.com BlackSunMovie.com videos.astroanthro.com/Science-Tourist Kaapstad, ZA uwcastro.org/our_team/holbr… 8 yrs, 11 mos on Twitter | 2,397 | 25.2% |
| 262. |  UK Space Agency@spacegovuk Official Twitter channel of the UK Space Agency. We're at the heart of UK efforts to explore and benefit from space. Swindon, England gov.uk/ukspaceagency 8 yrs, 9 mos on Twitter | 200,570 | 24.9% |
| 263. |  Ellen Stofan@EllenStofan John and Adrienne Mars Director of National Air and Space Museum, Planetary geologist, STEM advocate, former Chief Scientist of NASA. My tweets are my own. • Planetology • Exploring Venus as a Terrestrial ... Washington, DC airandspace.si.edu/stories/editor… 6 yrs, 5 mos on Twitter | 10,420 | 24.9% |
| 264. |  Will Gater@willgater Astronomer, journalist & space geek willgater.com | willgaterastrophotography.com | instagram.com/willgater UK willgater.com 10 yrs, 1 mo on Twitter | 7,747 | 24.9% |
| 265. |  Kimberly EnnicoSmith@kennicosmith Scientist fueled by tea. Inspired by many. Passionate about space exploration, human & robotic. What wonders await us? Mountain View, CA kandrsmith.org/KES/ 10 yrs, 4 mos on Twitter | 3,762 | 24.9% |
| 266. |  Paul Crowther@Paul_Crowther @unisheffield Astrophysics Prof mostly researching Monster Stars. Keen interest in UK sci policy esp @STFC_Matters's ups & downs. @PhysicsShef HoD from Jan 2018 Peoples Republic of Sheffield pacrowther.staff.shef.ac.uk 8 yrs, 7 mos on Twitter | 2,735 | 24.9% |
| 267. |  Derek Fox@partialobs Research astronomer and faculty member at Penn State University. This is a personal Twitter account. Earth astro.psu.edu/~dfox/ 9 yrs, 4 mos on Twitter | 2,257 | 24.9% |
| 268. |  Liz B ☆@astro_Liz Multiwavelength X-ray/Optical Astronomer at @ESO. Bleeding heart liberal & intersectional feminist. All views my own. Ⓥ #ActualLivingScientist #ImmodestWoman Santiago, Chile 6 yrs, 4 mos on Twitter | 1,294 | 24.9% |
| 269. |  Dr. Rachael Beaton@rareflwr41 migrant astronomer currently at Princeton; 'i have loved the stars too fondly to be fearful of the night' - sarah williams princeton, nj sites.google.com/site/rachaellb… 8 yrs, 4 mos on Twitter | 1,058 | 24.6% |
| 270. |  National Geographic@NatGeo Since its inception nearly 130 years ago, the core purpose of National Geographic has been to further the knowledge and awareness of our world. Global nationalgeographic.com 9 yrs, 7 mos on Twitter | 22,399,614 | 24.4% |
| 271. |  Stephen Fry@stephenfry How can I tell you what I think until I’ve heard what I’ve said? 🏳️🌈 (Never Read DMs I’m afraid) Los Angeles, CA/ London UK stephenfry.com 10 yrs, 0 mos on Twitter | 12,759,076 | 24.4% |
| 272. |  Mike Massimino@Astro_Mike Former @NASA astronaut, Professor at Columbia @CUSEAS, Sr. Advisor for Space Programs @IntrepidMuseum, Author of #Spaceman New York, NY prh.com/spaceman 9 yrs, 3 mos on Twitter | 1,220,061 | 24.4% |
| 273. |  Brian Greene@bgreene Physicist, Author, Co-founder @WorldSciFest New York, NY briangreene.org 6 yrs, 1 mo on Twitter | 1,121,222 | 24.4% |
| 274. |  NASA_TESS@NASA_TESS This is the official @NASA Twitter for the Transiting Exoplanet Survey Satellite (TESS). @NASA_TESS will perform an all-sky survey to discover new exoplanets Goddard Space Flight Center tess.gsfc.nasa.gov 4 yrs, 10 mos on Twitter | 35,810 | 24.4% |
| 275. |  Thomas Zurbuchen@Dr_ThomasZ Associate Administrator, @NASA Science Mission Directorate Washington, DC science.nasa.gov 7 yrs, 4 mos on Twitter | 15,236 | 24.4% |
| 276. |  Giant Magellan@GMTelescope The first “Extremely Large Telescope” seeking to unlock the mysteries of the universe. Las Campanas, Chile gmto.org 7 yrs, 1 mo on Twitter | 4,502 | 24.4% |
| 277. |  Caleb Scharf@caleb_scharf Director of Astrobiology at Columbia University. Blog at Sci Am (#sciamblogs). Author of The Zoomable Universe, The Copernicus Complex, Gravity's Engines... • The Zoomable Universe • The Copernicus Complex • Gravity's Engines New York calebscharf.com 7 yrs, 8 mos on Twitter | 4,138 | 24.4% |
| 278. |  Eli Bressert@astrobiased Love big ideas and putting them into action by connecting the impossible. Heading data science at Convoy. SU mentor & author of the SciPy & Numpy book. • SciPy and NumPy Seattle, WA 9 yrs, 8 mos on Twitter | 2,532 | 24.4% |
| 279. |  Astronomy On Tap@astronomyontap 🌟Professional astronomers reveal how they explore the Universe, at bars & pubs around the world!🌟This accnt follows satellite locations, organizers, & venues. Worldwide AstronomyOnTap.org 5 yrs, 5 mos on Twitter | 2,528 | 24.4% |
| 280. |  Mark Marley@astromarkmarley Astronomer working for a well known national space agency. Interests include extrasolar planets, brown dwarfs, giant planets. Opinions are mine alone. • Brown Dwarf Variability Mountain View, California google.com/profiles/Mark.… 7 yrs, 11 mos on Twitter | 1,838 | 24.4% |
| 281. |  Jeyhan@Jeyhan Assistant Professor at RIT interested in infrared galaxies, interacting/merging galaxies, and AGN. Also interested in public outreach and science communication. Rochester, NY jeyhan.me 10 yrs, 5 mos on Twitter | 1,025 | 24.1% |
| 282. |  Nate Silver@NateSilver538 Editor-in-Chief, @FiveThirtyEight. Author, The Signal and the Noise (amzn.to/QdyFYV). Sports/politics/food geek. New York fivethirtyeight.com 9 yrs, 10 mos on Twitter | 3,128,536 | 23.8% |
| 283. |  ACLU@ACLU The ACLU is a nonprofit, nonpartisan, legal and advocacy 501(c)(4) organization. Visit our site for more about us and our affiliated org, the ACLU Foundation. All 50 states aclu.org 10 yrs, 5 mos on Twitter | 1,492,363 | 23.8% |
| 284. |  NASA History Office@NASAhistory This is the NASA History Office's official Twitter account. We're happy that you share our passion for aerospace history. Washington, DC history.nasa.gov 8 yrs, 1 mo on Twitter | 846,929 | 23.8% |
| 285. |  Miriam Kramer@mirikramer @Mashable science editor. Always a space reporter. It's not aliens. It's never aliens. [email protected] DMs open and a mess. Now: NYC. Before: Tennessee. mashable.com/category/space 8 yrs, 2 mos on Twitter | 15,863 | 23.8% |
| 286. |  Dr. Caryl Gronwall@carylgronwall Astronomer at Penn State University State College, PA astro.psu.edu/~caryl 7 yrs, 4 mos on Twitter | 1,153 | 23.8% |
| 287. |  John Debes@JohnDebes STIS Team Lead at @stsci. Part of @diskdetective and @NASAWFIRST CGI science team. Exoplanets, white dwarf planets, and disks. My opinions are my own. Geektown, USA stsci.edu/~debes/ 5 yrs, 8 mos on Twitter | 922 | 23.8% |
| 288. |  BBC Science News@BBCScienceNews News, features and analysis from the BBC Science & Environment news desk. London, England bbc.co.uk/news/science_a… 11 yrs, 6 mos on Twitter | 1,361,883 | 23.5% |
| 289. |  Chandra Observatory@chandraxray Chandra's ongoing mission is to study the X-ray Universe. Operated for NASA by Smithsonian Astrophysical Observatory. Legal: s.si.edu/legal In orbit chandra.si.edu 10 yrs, 5 mos on Twitter | 161,289 | 23.5% |
| 290. |  NASA's OSIRIS-REx@OSIRISREx The official Twitter feed for NASA's OSIRIS-REx spacecraft. I'm on a seven-year mission to return a pristine sample from the #asteroid Bennu. #ToBennuAndBack Near-Earth space en route to asteroid Bennu AsteroidMission.org 10 yrs, 1 mo on Twitter | 52,408 | 23.5% |
| 291. |  Christine Corbett M.@corbett Cyber Defense Research & Europa Clipper Engineering @NASAJPL, Astrophysics @Caltech. Past: @SpaceX, @MIT, @SignalApp, @SPTelescope. Science @astro_corbett Pasadena, CA christinecorbettmoran.com 8 yrs, 2 mos on Twitter | 12,513 | 23.5% |
| 292. |  Keri Bean@PlanetaryKeri NASA Rey. Mars rover driver in training for @MarsRovers. Science ops for NASA's TIE Fighter @NASA_Dawn. R2-D2's mom. @SunriderBase @RebelLegion Rey. Hufflepuff Pasadena, CA keribean.com 7 yrs, 2 mos on Twitter | 8,181 | 23.5% |
| 293. |  Lisa Grossman@astrolisa Astronomy reporter at Science News, lifelong astronomy nerd. Ideas my own. She/her/hers Cambridge, MA 9 yrs, 4 mos on Twitter | 6,776 | 23.5% |
| 294. |  Nola Taylor Redd@NolaTRedd Freelance #science writer with a focus in #space and #astronomy. Atlanta, GA astrowriter.com 3 yrs, 1 mo on Twitter | 1,968 | 23.5% |
| 295. |  NASA Spitzer@NASAspitzer NASA's Spitzer Space Telescope - the infrared Great Observatory. Observes asteroids, comets, extrasolar planets, stars, galaxies and more... Pasadena, CA. spitzer.caltech.edu 8 yrs, 3 mos on Twitter | 104,609 | 23.2% |
| 296. |  Space Telescope Live@spacetelelive What is @HubbleTelescope looking at? –Reference images from @STScI Digitized Sky Survey and Sloan Digital Sky Survey Data Release 13 (not actual Hubble images) Low Earth Orbit spacetelescopelive.org 1 yr, 10 mos on Twitter | 8,442 | 23.2% |
| 297. |  Henna@henna_khan Founder at Universe Simplified (@UnivSimplified), Proponent of Disrupt Education and Maker Spaces, Astronomy Enthusiast, Backpacker Mumbai universesimplified.org 9 yrs, 0 mos on Twitter | 7,221 | 23.2% |
| 298. |  Vanessa Moss@cosmicpudding Adventures of the Cosmic Pudding & sidekick Vanessa: astronomy research, outreach, observing... I run @arXiver & @AstroJobVis. More interesting than a giraffe. Dwingeloo, Nederland youtube.com/user/thecosmic… 5 yrs, 2 mos on Twitter | 2,160 | 23.2% |
| 299. |  Edward Gomez 🤖@zemogle Astronomer, coder, and web technology enthusiast. Believe everyone can be a scientist if they ask more questions. Cardiff, UK edward.gomez.me.uk 10 yrs, 1 mo on Twitter | 2,032 | 23.2% |
| 300. |  Ray Jayawardhana@DrRayJay Astronomer, Explorer, Writer, Speaker. Author of "Strange New Worlds" and "Neutrino Hunters" • Neutrino Hunters • Strange New Worlds • Young Stars Near Earth rayjay.net 7 yrs, 4 mos on Twitter | 1,720 | 23.2% |