SMRTR Science & EngineeringApr 17, 2025Scientific American

What Is Dimethyl Sulfide, the Chemical Potentially Found on Exoplanet K2-18 b?

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NASA's James Webb Space Telescope may have detected high levels of dimethyl sulfide in the atmosphere of exoplanet K2-18 b, sparking excitement about potential alien life. While dimethyl sulfide is produced by microbes on Earth, recent research shows it can also form without living organisms, making it inconclusive as proof of extraterrestrial life.

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