Season 2 Episodes15
Cast1

Michael J. Massimino
Narrator (voice)
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Astronaut Mike Massimino uses the latest science to reveal the strange secrets of planet earth, and explores whether alien earths exist elsewhere in the universe.

Michael J. Massimino
Narrator (voice)
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"Earth: The Secret History" is episode 1 of The Planets and Beyond season 2. It aired on March 20, 2018.