11/10/2026
Webb sees water clouds come and go on the coldest known brown dwarf — a first beyond the solar system
On WISE 0855, a frozen, sunless brown dwarf 7.5 light-years away, the James Webb Space Telescope has watched water-ice clouds come and go as the object turns — the first time changing water clouds have been seen on any world beyond the solar system....
https://skycr.org/2026/10/10/variable-water-clouds-wise-0855/
The James Webb Space Telescope has caught water clouds thickening and thinning on WISE 0855, the coldest known brown dwarf, 7.5 light-years away — the first detection of variable water clouds beyond the solar system, and a rehearsal for reading weather on distant planets.