EpisodeS63E82019-09-08
The Sky at Night
Alien Worlds
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?
The Sky at Night
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?