K2-18b
About K2-18b
A sub-Neptune 124 light-years away with water vapor detected in its atmosphere. The James Webb Space Telescope found methane and carbon dioxide, consistent with a possible water world. In 2023 researchers reported a tentative detection of dimethyl sulfide, a possible biosignature, though unconfirmed. About 8.6 times the mass of Earth. Orbits in the habitable zone of a red dwarf.
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