Where did Planet X go? Neil deGrasse Tyson and comedian Chuck Nice break down the case of Planet X and whether there could be more planets lurking in our solar system.

Learn about the history of discovering planets and why it lead scientists to believe in a Planet X. Discover how a prediction lead to finding Neptune and Pluto. When did the idea of Planet X go away? Is there still a chance that there is an unknown planet orbiting in the darkness of our outer solar system?

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About StarTalk:
Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

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Timestamps:
00:00 - Introduction: Planet X
00:39 - Discovering Uranus & Neptune
03:10 - Finding Planet X (Pluto)
7:28 - Checking for Error & The Disappearance of Planet X
9:00 - Planets in The Outer Solar System