Tentative DMS Signal on K2-18b: Caution in Interpreting Biosignatures on Hycean Worlds

To the point

Led by Nikku Madhusudhan, researchers are probing life beyond Earth and report a tentative detection of sulfur-based biosignature gases on the exoplanet K2-18b, but the result could be produced abiotically or depend on unknown planet conditions, so cautious optimism and a coordinated effort to test nonbiological pathways are essential to interpret potential signs of life.

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