JWST reveals only a thin atmosphere on TRAPPIST-1d (an Earth sized planet in the habitable zone)

From Dr. Becky

A huge goal for astrophysics is to work out whether Earth is special or not. Are there other Earth-like rocky planets out there with thick atmospheres and life giving oceans, just the right distance from their stars so they’re not too hot and not too cold for life to flourish? Or did we just win the cosmic lottery? All our hopes of answering this are currently on the James Webb Space Telescope, and in particular a lot of excitement has swirled around the TRAPPIST-1 system, a star 40 light yea...