Season 63Episode 8Runtime unavailable
Alien Worlds
2019-09-087.0 rating
Astronomers have found more than 4,000 planets circling stars other than our own. What do we know about these alien worlds and how have we managed to detect them?
2019-09-087.0 rating
Astronomers have found more than 4,000 planets circling stars other than our own. What do we know about these alien worlds and how have we managed to detect them?