JWST Detects DMS/DMDS Signatures in K2-18b's Atmosphere, a Strong Biosignature Hint for an Exoplanet

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Led by Nikku Madhusudhan, researchers using JWST's MIRI detected signatures of dimethyl sulfide and possibly dimethyl disulfide in the atmosphere of the Hycean exoplanet K2-18b, offering the strongest biosignature hint yet but requiring more observations to rule out non-biological production.

Webb Detects Possible Biosignature Gases in Atmosphere of K2-18b | Sci.News
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Webb Detects Possible Biosignature Gases in Atmosphere of K2-18b | Sci.News

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected the chemical fingerprints of dimethyl sulfide and/or dimethyl disulfide in the atmosphere of the super-Earth exoplanet K2-18b.