Scientists claim to have found evidence of alien life. But 'biosignatures' might hide more than they reveal
- Astrophysicist Nikku Madhusudhan led a recent study using James Webb observations of exoplanet K2-18b.
- Investigators targeted K2-18b because scientists consider it a potential Hycean world capable of supporting life.
- Evidence for dimethyl sulfide appeared in the planet's atmosphere.
- On Earth, DMS originates solely from living organisms, and the detection had a 0.3% fluke probability.
- While suggesting possible life, confirmation needs more data and resolution of theoretical problems.
11 Articles
11 Articles


Scientists claim to have found evidence of alien life. But ‘biosignatures’ might hide more than they reveal
Artist's impression of the exoplanet K2-18b A. Smith/N. Madhusudhan (University of Cambridge)Whether or not we’re alone in the universe is one of the biggest questions in science. A recent study, led by astrophysicist Nikku Madhusudhan at the University of Cambridge, suggests the answer might be no. Based on observations from NASA’s James Webb Space Telescope, the study points to alien life on K2-18b, a distant exoplanet 124 light years from Ear…
Scientists Just Found the ‘Strongest Evidence’ of Alien Life Yet
It’s 124 light-years away, wrapped in a steamy hydrogen-rich atmosphere, and just might be crawling with alien microbes. K2-18b, a distant exoplanet orbiting a star in the Leo constellation, has officially become the most promising candidate yet in the search for life beyond Earth. Using the James Webb Space Telescope, scientists say they’ve picked up the “strongest evidence yet” of possible biosignatures in its atmosphere—specifically, dimethyl…
Greenhouse Hell. Did scientists really find life on a distant planet
Is there life on the notorious media planet K2-18b? Boris Stern, an astrophysicist and journalist, explains why the answer to this question is most likely “no”, and also explains how and when it can be worn.
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