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Kevin B. Stevenson

Kevin B. Stevenson

Exoplanet Atmospheric Scientist

Appears in 1 story

Stories

The K2-18b biosignature hunt

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Lead author challenging K2-18b biosignature claims

Cambridge astronomers announced they'd found dimethyl sulfide and dimethyl disulfide in the atmosphere of K2-18bโ€”molecules that, on Earth, only life produces. The detection using JWST's mid-infrared instrument hit 3-sigma confidence, meaning a 0.3% chance it's statistical noise. If real, it's the strongest evidence yet of biology beyond our solar system.

Updated Jan 7