Strongest Hints Yet of a Sulfur-Based Biosignature on K2-18b from JWST

To the point

Nikku Madhusudhan and colleagues Måns Holmberg, Subhajit Sarkar, and Savvas Constantinou report that JWST detected hints of a potential biosignature in the atmosphere of K2-18b at three-sigma significance (about a 0.3% chance of a random fluctuation), consistent with dimethyl sulfide and/or dimethyl disulfide, though non-biological explanations are possible and more data are needed.

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Strongest Hints Yet Of Biological Activity Outside Our Solar System - Astrobiology
astrobiology.com

Strongest Hints Yet Of Biological Activity Outside Our Solar System - Astrobiology

Astronomers have detected the most promising signs yet of a possible biosignature outside the solar system, although they remain cautious. Using data from the James Webb Space Telescope (JWST), the astronomers, led by the University of Cambridge, have detected the chemical fingerprints of dimethyl sulfide (DMS) and/or dimethyl disulfide (DMDS), in the atmosphere of the […]