Season 1 · Episode 5 of 8
Aired Sep 19, 2017
Planet 9: The Lost World
Tue, Sep 19, 2017
0 of 8 watched this season
Astronaut Mike Massimino investigates the possibility of a giant ninth planet at the edge of the solar system; using the latest technology, he reveals the incredible secrets of this mysterious world.
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Airs
Tue, Sep 19, 2017
Show
The Planets
23 episodes
Episode
S1 · E5
in The Planets