A 'super-puff' exoplanet is losing its atmosphere, and the James Webb Space Telescope had a look
December 4, 2025
Astronomers have spotted a distant world “shedding” its atmosphere into space in real time, creating a giant companion cloud of gas that travels ahead of the planet as it orbits its star.
Observations from the James Webb Space Telescope (JWST) have revealed an unprecedented view of helium gas evaporating from a distant, giant exoplanet called WASP-107b. The escaping gas stretches…