Sand…coarse, rough, gets everywhere. We may have found it on VHS 1256 b, a Tatooine-like world orbiting twin suns. Among other molecules, Webb detected silicate dust grains in its atmosphere. The larger grains may be like very hot, small sand particles: https://go.nasa.gov/40jDNje
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NASA’s Webb Spots Swirling, Gritty Clouds on Remote Planet
Researchers observing with NASA’s James Webb Space Telescope have pinpointed silicate cloud features in a distant planet’s atmosphere.Isabelle Yan (NASA)