Have scientists really found signs of alien life on K2-18b?

Scientists found a potential sign of life on a distant planet – an astronomer explains why many are still skeptical

An illustration of the exoplanet K2-18b, which some research suggests may be covered by deep oceans. NASA, ESA, CSA, Joseph Olmsted (STScI)A team of astronomers announced on April 16, 2025, that in the process of studying a planet around another star, they had found evidence for an unexpected atmospheric gas. On Earth, that gas – called dimethyl sulfide – is mostly produced by living organisms. In April 2024, the James Webb Space Telescope stare…

Have scientists really found signs of alien life on K2-18b?

Extraordinary claims require extraordinary evidence. We're not quite there.

A team of astronomers announced that the James Webb space telescope has detected signs of possible signs of life on planet K2-18b, located 124 light years away in the constellation of Leo. You may be interested: Terrifying? NASA captures sound in Outer Space Scientists found in its atmosphere traces of two chemical compounds — dimethylsulfide (DMS) and dimethyl disulfide — which, on Earth, are only produced by living organisms such as phytoplank…

Alien Poop Means We Are Not Alone. But Let Me Just Adjust This Model Parameter...

K2-18b and our new age of alien agnosticism

120 light years from Earth, exoplanet K2-18b could hide a revolutionary secret: chemical signals that, in our world, produce only living beings. The James Webb telescope has detected dimethyl sulfide (DMS) in its atmosphere, a molecule that on Earth generates organisms such as seaweed. Nikku Madhusudhan’s team, a scientist at Cambridge University, suggests that this “subneptune” — larger than Earth but less than Neptune — could be a Hycean world…

A team from Cambridge found signs of molecules on the planet K2-18b that are produced by living organisms on Earth. Does this mean that people have found extraterrestrial life and how sure are scientists of this? "Paper" talked about this with a candidate of physical and mathematical sciences, former research fellow at the Pulkovo Observatory Kirill Maslennikov. Photo: Kirill Maslennikov's Facebook — What did scientists from Cambridge discov…