How We Went From 5 Planets To 5 Trillion

How did we go from knowing a few planets in our own sky to confirming thousands of worlds around other stars? This episode follows the story of exoplanets: where the word “planet” comes from, why planets looked like wanderers in the night sky, how telescopes changed our view of the solar system, and how astronomers learned to find planets we usually can’t see directly. Hosted by Dr. Dakotah Tyler, this one moves from Galileo and Jupiter’s moons to hot Jupiters, pulsar planets, lava worlds, water worlds, rogue planets, and the strange possibility of more hidden planets far beyond Neptune. Hosted by Dr. Dakotah Tyler. Lead with curiosity. Chapters 00:00:00 Intro 00:05:06 Why stars change with the seasons 00:09:35 Earth becomes a planet too 00:14:26 Kepler, Newton, and imperfect orbits 00:18:18 Uranus, Neptune, Pluto, and Planet 9 00:21:22 Why exoplanets are so hard to find 00:25:04 Transit method, radial velocity, and pulsar planets 00:30:55 Hot Jupiters and detection bias 00:36:14 Super-Earths, sub-Neptunes, and lava worlds 00:39:50 Water worlds and the search for life 00:44:22 Planets with two suns and rogue planets 00:47:49 What we still don’t know about exoplanets