About 1,300 light-years away, cloudy mists are swirling in the high atmosphere of a huge, hot exoplanet called WASP-17 b. Tiny quartz crystals on a hot, faraway worldThe planet, WASP-17 b, is a hot Jupiter 1,300 light-years from Earth in the constellation Scorpius the Scorpion. It isn’t yet known just how much quartz is present or how extensive the mist-like quartz clouds are. A hot Jupiter (WASP-17 b), a warm Neptune and a temperate rocky planet more like Earth. Bottom line: Astronomers using NASA’s Webb telescope have discovered clouds of tiny quartz crystals in the atmosphere of a hot Jupiter exoplanet 1,300 light-years away.