How the Universe Works
Mystery of Planet 9 (5x2)
Udgivelsesdato: Nov 29, 2016
Examining a ninth planet that may be on the outer edge of the solar system. Scientists speculate that it could be 10 times the size of Earth and have moons capable of hosting life.
- Premieret: Apr 2010
- Afsnit: 97
- Følgere: 117
- Kørende
- Science Channel
- Onsdag på 21