Mystery of Planet 9 (S05E02)
S05E02
Title: Enigma of Planet Nine Plot: Astronomers have uncovered an enigmatic ninth planet located at the farthest reaches of our solar system. This colossal body, measuring ten times greater than Earth, may host moons that harbor alien life forms.
Show
How the Universe Works
Episode
S05E02
Air Date
Nov 29, 2016