James Webb Telescope Observes Gritty Clouds and Weather Patterns on Distant Exoplanet.

NASA's James Webb Space Telescope has detected silicate cloud features in the atmosphere of exoplanet VHS 1256 b, which is about 40 light-years away and orbits two stars over a 10,000-year period. The planet's atmosphere is constantly rising, mixing, and moving during its 22-hour day, making it the most variable planetary-mass object known to date. The team also detected water, methane, carbon monoxide, and carbon dioxide in the planet's atmosphere, making it the largest number of molecules ever identified on a planet outside our solar system.