How the Universe Works · SEASON 5
Secret History of Pluto
Episode 4 · 2017-01-03

- Documentary
Episode overview
The first close-up images of Pluto revealed unimaginable secrets of this mysterious frozen world. Now, scientists investigate if Pluto is home to a warm ocean of liquid water beneath its surface, and whether this underground ocean could harbor life.
42 minutes
Season 5 episodes
1. Most Amazing Discoveries2016-11-22
2. Mystery of Planet 92016-11-29
3. Black Holes: The Secret Origin2016-12-06
4. Secret History of Pluto2017-01-03
5. Stars That Kill2017-01-10
6. The Universe's Deadliest2017-01-17
7. Life and Death on the Red Planet2017-01-24
8. The Dark Matter Enigma2017-01-31
9. Strangest Alien Worlds2017-02-07