11 Season
96 Episode
How the Universe Works - Season 5 Episode 2 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.
- Year: 2023
- Country: United States of America
- Genre: Documentary
- Studio: Science, Discovery
- Keyword: universe, astronomy, astrophysics
- Director:
- Cast: