Signs of alien life on exoplanet K2-18b may just be statistical noise

image via New Scientist

April 24, 2025, 4:49 PM

• •A re-analysis of data from the James Webb Space Telescope suggests that apparent signs of alien life on the exoplanet K2-18b may just be statistical noise, contradicting a previous claim.

Astronomers initially reported hints of biological activity on the exoplanet K2-18b, suggesting the presence of dimethyl sulphide. However, a new analysis of the data from the James Webb Space Telescope indicates that the claimed molecules may not exist. This re-evaluation challenges the initial findings, implying that the signals of alien life may be merely statistical noise. The study highlights the complexity of identifying extraterrestrial life and the importance of rigorous data analysis.

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