SETI Institute: A Multidisciplinary Quest to Understand Life, Intelligence, and the Cosmos

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SETI Institute is a nonprofit research organization that pursues understanding the origins and prevalence of life and intelligence in the universe through multidisciplinary science, education, and public outreach, led by Nathalie Cabrol and featuring Seth Shostak.

Biosignatures on K2-18 b?
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Biosignatures on K2-18 b?

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 yet be ruled