CNN - A team of astronomers have detected what they call the most promising signs to date of a possible biosignature, or signs of past or present life linked to biological activity, on an exoplanet named K2-18b. But the study authors, and other experts, remain cautious and have not declared a definitive discovery of life beyond our planet.
A study detailing the findings was published Thursday in The Astrophysical Journal Letters.
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Eddie Schwieterman, assistant professor of astrobiology at the University of California, Riverside, is “somewhat skeptical but very intrigued and excited about what’s next.” Schwieterman, who has studied K2-18b in the past, was not involved in the new research.