This strange world has no star to orbit, yet James Webb has revealed its changing weather from 20 light-years away

Webb telescope observed SIMP 0136, a brown dwarf twenty light-years away. Researchers found its changing appearance stems from temperature and cloud structure. These two factors explain most atmospheric variability observed by the telescope. The brown dwarf's atmosphere exhibits three recurring weather states as it rotates. This new method helps study distant worlds with limited direct observation.