How the Universe Works: 5x4
Secret History of Pluto
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.
5 - 1Most Amazing Discoveries Nov. 22, 2016
5 - 2Mystery of Planet 9 Nov. 29, 2016
5 - 3Black Holes: The Secret Origin Dec. 06, 2016
5 - 4Secret History of Pluto Jan. 03, 2017
5 - 5Stars That Kill Jan. 10, 2017
5 - 6The Universe's Deadliest Jan. 17, 2017
5 - 7Life and Death on the Red Planet Jan. 24, 2017
5 - 8The Dark Matter Enigma Jan. 31, 2017
5 - 9Strangest Alien Worlds Feb. 07, 2017