James Webb Space Telescope Detects Changing Water Clouds on Cold Brown Dwarf WISE 0855

Astronomers using the James Webb Space Telescope have for the first time directly confirmed that water clouds on a distant brown dwarf, WISE 0855, are changing thickness over time, similar to weather on Earth. This Jupiter-sized world, located 7.5 light-years away, also shows signs of carbon monoxide and phosphine gases being brought up by convection from deeper atmospheric layers. The findings provide new insights into atmospheric dynamics beyond our solar system.