JWST maps extreme weather on ruby-raining exoplanet (opens in new tab)

James Webb Space Telescope observations have yielded new weather analyses of ultra-hot Jupiters, centered mainly on WASP-121 b, a gas giant described as nearly twice Jupiter’s size and orbiting extremely close to its star. Les Numériques cited a Nature Astronomy study that mapped the morning and evening sides of WASP-121 b separately and continuously, reporting winds of 18,000 km/h and burning precipitation of sapphire- and ruby-like minerals on a planet about 850 light-years away. Eos separa...