An exoplanet 124 light-years away may harbour a global ocean beneath a hydrogen-rich atmosphere. Webb has produced two tentative hints of dimethyl sulfide—a gas produced mainly by marine microorganisms on Earth—but independent analyses dispute whether the
Webb has twice hinted at dimethyl sulfide, a life-linked gas, at the possible ocean world K2-18b. Independent teams re-examining the data doubt the molecule is there at all. The post An exoplanet 124…
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