Season 5: Episode 1

Season 5: Episode 3

How the Universe Works (2010)

Season 5: Episode 2

Mystery of Planet 9

TMDb

Air Date:

2025-12-06

Genre

Documentary

Release Date

2010

End Date

2023

Episode Description

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.

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