Atmospheric Retention on the Outer TRAPPIST-1 Planets: Implications for Habitability and Life around Ultracool Dwarfs
To the point
If you’re around TRAPPIST-1, the outer seven Earth-sized planets might keep their atmospheres for billions of years despite harsh space weather, because computer simulations plus simple calculations agree on it, which matters for their possible habitability and for finding life-friendly worlds around such stars, though there are many uncertainties.