Planet 9: The Lost World (S01E05)
S01E05
Astronaut Mike Massimino explores the intriguing idea of a massive ninth planet lurking at the far reaches of our solar system. Employing cutting-edge technology, he uncovers astonishing secrets about this enigmatic celestial body.
Show
The Planets and Beyond
Episode
S01E05
Air Date
Sep 19, 2017