How the Universe Works - Season 5 Episode 2
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.
First Air Date : 2010-04-25
Last Air date : 2023-04-02
Runtime : 57 minutes
Genre : Documentary
Cast :
Crew :
Quality : 
Subtitles :
- Season 5 : Episode 12016-11-22
- Season 5 : Episode 22016-11-29
- Season 5 : Episode 32016-12-06
- Season 5 : Episode 42017-01-03
- Season 5 : Episode 52017-01-10
- Season 5 : Episode 62017-01-17
- Season 5 : Episode 72017-01-24
- Season 5 : Episode 82017-01-31
- Season 5 : Episode 92017-02-07
