The James Webb Space Telescope has tracked how the atmosphere of a distant gas giant changes from longitude to longitude during transit, revealing pronounced differences between its morning and evening regions. On the ultra-hot Jupiter WASP-121b, the evening region appears hotter and more expanded, with some of its water molecules broken apart by the heat. [...] The post In June 2026, the James Webb telescope read the dawn and dusk skies of WASP-121b separately and found one side hotter and stripped of water, the other cooler and possibly cloudy, on a world where it can rain liquid rock appeared first on Space Daily .
In June 2026, the James Webb telescope read the dawn and dusk skies of WASP-121b separately and found one side hotter and stripped of water, the other cooler and possibly cloudy, on a world where it can rain liquid rock
