How the Universe Works Season 5 Episode 8 - Strangest Alien Worlds

Airdate: 2017-Feb-07

Episode summary:

Discoveries of new planets have revealed countless worlds much stranger than Earth. Some of these strange 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?

About How the Universe Works series:

How the Universe Works is the greatest story ever told, the creation of everything us. The programme investigates how the Universe came into existe...Show more >