01/12/2026
🚨 Scientists may have just found the strongest hints yet of life beyond Earth — on a planet only 124 light-years away.
Using the James Webb Space Telescope, astronomers have detected intriguing chemical signals in the atmosphere of K2-18 b, a distant exoplanet orbiting within the habitable zone of its star. The planet is classified as a Hycean world — meaning it likely has a hydrogen-rich atmosphere and a vast global ocean beneath.
What makes this discovery extraordinary is the detection of dimethyl sulfide (DMS) and dimethyl disulfide (DMDS). On Earth, these gases are produced almost exclusively by living organisms, especially marine microbes like phytoplankton. Finding them in the atmosphere of another planet places K2-18 b among the most compelling candidates ever for potential extraterrestrial life.
Previous observations had already confirmed methane and carbon dioxide in the planet’s atmosphere — molecules consistent with biological processes. The addition of DMS and DMDS significantly raises the stakes, sharpening the case for possible life-driven chemistry occurring far beyond our solar system.
Astrophysicist Nikku Madhusudhan of the University of Cambridge, who led the study, described the findings as a “transformational moment” for astrobiology. While scientists emphasize that further observations are essential before drawing firm conclusions, this discovery marks a major milestone in the search for life elsewhere in the universe.
We may not be alone — and the clues are finally starting to surface. 🌍✨
Source
Madhusudhan, N., et al. (2025). James Webb Space Telescope Observations of K2-18 b. Nature Astronomy