How the Universe Works: Season 5, Episode 9

Strangest Alien Worlds

Discoveries of new planets have revealed countless worlds much stranger than Earth. Some of these worlds don't have stars, others are made out of diamonds. Will we ever find a planet like Earth, or are these distant worlds stranger than fiction?

Release Date: 2010-04-25
Seasons: 1 2 3 4 5 6 7 8 9 10 11
TMDb: 8.2/10
  • Country: US
  • Language: English
  • Runtime: 42

Other episodes for this season

Most Amazing Discoveries
Episode 1 - Most Amazing Discoveries
Mystery of Planet 9
Episode 2 - Mystery of Planet 9
Black Holes: The Secret Origin
Episode 3 - Black Holes: The Secret O...
Secret History of Pluto
Episode 4 - Secret History of Pluto
Stars That Kill
Episode 5 - Stars That Kill
The Universe's Deadliest
Episode 6 - The Universe's Deadliest
Life and Death on the Red Planet
Episode 7 - Life and Death on the Red...
The Dark Matter Enigma
Episode 8 - The Dark Matter Enigma
Strangest Alien Worlds
Episode 9 - Strangest Alien Worlds