Possible DMS/DMDS Biosignatures Detected in K2-18b by JWST, But Not a Definitive Sign of Life

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Lead author Nikku Madhusudhan and colleagues report that the James Webb Space Telescope detected potential biosignature gases—dimethyl sulfide and possibly dimethyl disulfide—in the atmosphere of K2-18b, a hydrogen-rich exoplanet that could host a liquid-water ocean in its star’s habitable zone, but the finding is not conclusive and requires independent confirmation and more data to rule out non-biological explanations.

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Scientists detect signature of life on a distant planet, study suggests | CNN
cnn.com

Scientists detect signature of life on a distant planet, study suggests | CNN

Astronomers have made a detection suggesting biosignatures, or signs of biological activity, on an exoplanet located 124 light-years away. But experts are skeptical.