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Scientists suggest the strongest evidence yet for extraterrestrial life on exoplanet K2-18b, 120 light-years away. Analysis of its atmosphere reveals an abundance of a molecule only known to be produced by living organisms on Earth, such as algae. Researchers cautiously suggest a warm ocean teeming with life as the best explanation, calling it a 'revolutionary moment' and the first potential biosignatures on a habitable planet. Further research is needed to confirm this groundbreaking finding.

Prepared by Olivia Bennett and reviewed by editorial team.