S5·E9 Strangest Alien Worlds
Aired February 7, 2017
Synopsis
Discoveries of new planets have revealed countless worlds much stranger than Earth. Some of these worlds don't have stars, others are made out of diamonds. Will we ever find a planet like Earth, or are these distant worlds stranger than fiction?
Rate this episode
Your rating is anonymous and can be changed later.
Be the first viewer to rate it.
Advertisement