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Mystery of Planet 9

Scientists have discovered a mysterious ninth planet on the very edge of our solar system. Ten times the size of Earth, this strange world could have moons with extraterrestrial life.
Aired: Nov 29, 2016 Genre: DocumentaryDuration: 42m Rating: 4 Country: United States of America Production: Discovery
Seasons
Season 1Season 2Season 3Season 4Season 5Season 6Season 7Season 8Season 9Season 10Season 11
Episodes
01: Most Amazing Discoveries02: Mystery of Planet 903: Black Holes: The Secret Origin04: Secret History of Pluto05: Stars That Kill06: The Universe's Deadliest07: Life and Death on the Red Planet08: The Dark Matter Enigma09: Strangest Alien Worlds
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