Skepticism greets claims of a possible biosignature on a distant world It’s really difficult to get a clear sign of life on an exoplanet.

Good questions to ask about the recent announcement of finding #dimethylslfide on #K2-18b and its potential #astrobiology implications. Is it really a #hycean world? And is it dimethylsulfide? Still a fascinating possibility!
arstechnica.com/science/2025...