Astronomers have detected atmospheric water clouds and Earth-like weather patterns on the brown dwarf WISE 0855, located just 7.5 light-years from our Solar System. According to reports by BGR, the detailed observation was achieved using the James Webb Space Telescope.
Eleven Hours of Continuous Spectral Monitoring
A research team from the University of Arizona’s Steward Observatory observed the celestial body using the James Webb Space Telescope over an 11-hour period, capturing spectral readings every 15 minutes. The observations revealed that the water clouds are dynamic rather than static, constantly shifting as the object rotates, much like weather patterns on Earth.
Scientific Significance and Habitability
Although WISE 0855—roughly comparable in volume to Jupiter—has been known to astronomers since 2014, its atmosphere has never before been analyzed with such precision. Despite having water clouds, brown dwarfs are sub-stellar objects rather than standard planets, and this particular body remains entirely uninhabitable.
Researchers emphasize that the breakthrough lies not only in confirming water clouds, but also in tracking variations in cloud thickness and analyzing atmospheric composition over time. This methodology provides scientists with a powerful framework for studying the atmospheres of distant cosmic bodies in the future.
