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Madhusudhan et al. just reported ~3 sigma detection of dimethyl sulfide (DMS) or dimethyl disulfide (DMDS) in the atmosphere of K2-18 b in the Astrophysical Journal Letters. The claim is intriguing, as these gases can be associated with biological activity. On the other hand, the signal is modest, ambiguous, and potentially explainable as the result of noise or systematic error. Moreover, abiotic sources for these compounds do exist, and even if they are low-yield and short-lived, they cannot y…

Insights from NASA scientists reveal why even with James Webb the quest to find alien life remains challenging and elusive.

A planet 120 light-years away from Earth appears to have chemicals that could indicate the presence of life. Lead author professor Nikku Madhusudhan from the University of Cambridge joins CNN to explain the study.