Under Alien Skies with Phil Plait
Planetary Radio: Space Exploration, Astronomy and Science
00:00
The Origins of Trappist One
The Trappist One star has seven known planets. They're all rocky, small worlds and three of them are orbiting close enough to be in the habitable zone of that star. If this is just a rocky ball with a decent atmosphere, liquid water could be on the surface.
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