Debate on K2-18b's DMS Signal: A Strong Life Claim Facing Uncertainty and Calls for Independent Verification

To the point

There is a possible sign of life on exoplanet K2-18b from a dimethyl sulfide signal, but there’s no consensus and non-biological explanations are plausible, so independent verification and more data are needed before declaring the planet habitable or life-bearing.

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Life on Exoplanet K2-18b?
scienceandculture.com

Life on Exoplanet K2-18b?

The molecule is dimethyl sulfide (DMS) or dimethyl disulfide (DMDS), and on Earth its sole known source is life (specifically, marine phytoplankton algae).