Planetary habitability

So if we're thinking in terms of habitability, that's bad news for TRAPPIST-1E.

Habitability-wise, back in its own star system, TRAPPIST-1E is the most promising of all its TRAPPIST neighbors.

Yeah, it has six rocky planetary neighbors.

Some of those planets are boiling hot, too hot for any life to exist on them, and some are frozen worlds, but TRAPPIST-1E kind of rocks.