Tentative DMS/DMDS Signal in K2-18 b Atmosphere: A Cautious Hint at Biosignatures Requiring Replication
To the point
Cambridge University scientists report a tentative detection of dimethyl sulfide (DMS) and possibly dimethyl disulfide (DMDS) in the atmosphere of the exoplanet K2-18 b using JWST MIRI LRS, a potential biosignature signal that is not statistically robust and will require replication and further study to confirm, echoing Carl Sagan’s call for extraordinary evidence.
