David Livingston is here—Dr. Space himself, my colleague and co-host and co-pilot. This is Hotel Mars, and we're headed forty light-years out thanks to Julien de Wit and Benjamin Rackham at MIT.
These two men are astronomers, and they're going to take us to an ultra-cold dwarf, a subset of red dwarfs, which is the most popular star in the solar system.
If you're asking, we've got a yellow dwarf. We're very lucky, but we're going to the exoplanets of a dwarf named TRAPPIST-1.
I ask Julien, what is an ultra-cold dwarf? How should we think of it? Why does it have all these planets seven so far around it?
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