Cutting-edge technology is revealing thousands of exoplanets throughout the universe, and experts uncover if these worlds are similar enough to Earth to be a second home for humanity. This is a mashup of S03E09 "The Search for a Second Earth", S07E09 "Finding the New Earth", and S05E08 "Strangest Alien Worlds".
Cast Appearances
Mike Rowe
voices Himself (Narrator)Episode Discussion
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