TrueSciPhi

Podcast Profile: Astronomy 161 - Introduction to Solar System Astronomy

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47 episodes
2006 to 2009

Collection: Physics, Math, and Astronomy

Description (podcaster-provided):

Themes and summary (AI-generated based on podcaster-provided show and episode descriptions):

This podcast is an audio archive of live introductory astronomy lectures taught at The Ohio State University for non–science majors, focusing on the Solar System and the observational foundations behind what we know about it. Across the lectures, listeners are guided through the practical “toolkit” of astronomy: working with very large numbers and units (including astronomical units and light-years), describing positions on Earth and on the celestial sphere, and explaining the sky’s daily and yearly patterns as consequences of Earth’s rotation and orbit.

A substantial portion of the content connects astronomical geometry to familiar phenomena, including the seasons, the Moon’s phase cycle, eclipses, tides, and the origins of timekeeping conventions such as solar versus sidereal time, time zones, and calendar reforms. The course also traces the historical development of models of the cosmos, moving from Greek geocentric and early heliocentric ideas through Copernicus, Tycho, Kepler, Galileo’s telescopic discoveries, and Newton’s laws of motion and universal gravitation, culminating in how orbital mechanics explains and predicts planetary motion.

The podcast then shifts to the physics and instruments used to study space: properties of light, the Doppler effect, atoms and radiation, blackbody emission, spectral lines and spectroscopy, and the roles of ground-based, radio, and space telescopes. With this foundation, the lectures survey Solar System formation and compare planetary interiors, surfaces, and atmospheres, covering Earth, the Moon, the terrestrial planets, the gas and ice giants, moons, rings, asteroids, comets, and trans-Neptunian objects. The series also addresses how scientific definitions evolve (including the planet/dwarf-planet debate) and ends by outlining methods for detecting exoplanets and what early discoveries imply about planetary systems.