Webb watched weather move on a world 7.5 light-years away — water clouds, shifting like Earth's

WISE 0855 is a failed star colder than Earth, floating just 7.5 light-years away. A University of Arizona team led by astronomer Brittany Miles used the James Webb Space Telescope to watch it for 11 hours, taking its atmospheric fingerprint every 15 minutes — and saw water clouds thicken and thin as the world rotates, weather in motion beyond our solar system. Gases welling up from its depths showed alongside the clouds. The findings, detailed in The Astrophysical Journal, sharpen the tools astronomers will use on distant giant planets.