A giant exoplanet 855 light-years away is so extreme, it has clouds of vaporized metals and rains liquid rubies and sapphires.
It is, however, extremely unlikely that WASP-121 b could be habitable. On such a close orbit, it's exceedingly hot, with temperatures that range between 1,500 and 3,000 Kelvin .
This detailed, changing spectrum of light allowed them to observe and reconstruct the full water cycle of an exoplanet for the first time.Mikal-Evans explains Here on Earth, the water cycle involves phase transitions as water cycles through as a vapor, a liquid, and a solid . On WASP-121 b, even on the night side, temperatures are too hot for either the solid or liquid phases of water. Instead, on the day side, where temperatures exceed 3,000 Kelvin, loss of energy from the water molecules
"These winds are much faster than our jet stream, and can probably move clouds across the entire planet in about 20 hours,"When these winds reach the night side of WASP-121 b, temperatures are cool enough to return the water to a vapor state, before it gets carried around to the day side again.
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