JWST Detects Potentially Biosignature Gases on Exoplanet K2-18b

Using the James Webb Space Telescope, scientists have detected signs of dimethyl sulfide and dimethyl disulfide in the atmosphere of exoplanet K2-18b, chemicals produced by marine life on Earth. While not definitive proof of life, researchers call it the most promising sign yet of life beyond our solar system. K2-18b resides in the habitable zone, possessing the potential for liquid water, making life a possibility. This builds upon prior research identifying methane and carbon dioxide in K2-18b's atmosphere. Although alternative explanations exist, researchers are excited about the discovery and plan further investigation to confirm their findings.