How the Universe Works
Mystery of Planet 9 (S05E02)
Title: Enigma of Planet Nine Plot: Astronomers have uncovered an enigmatic ninth planet located at the farthest reaches of our solar system. This ...
S05E02
Show
Season 5 Episodes
S05E02 - Mystery of Planet 9
How the Universe Works
S05E03 - Black Holes: The Secret Origin
How the Universe Works
S05E04 - Secret History of Pluto
How the Universe Works
S05E05 - Stars That Kill
How the Universe Works
S05E06 - The Universe's Deadliest
How the Universe Works
S05E07 - Life and Death on the Red Planet
How the Universe Works
S05E08 - The Dark Matter Enigma
How the Universe Works