Scientists have detected dimethyl sulphide in the atmosphere of the distant extrasolar planet K2-18b, which orbits a dwarf star 124 light years away from Earth. This gas, believed to be 'only produced by life,' has sparked excitement as K2-18b sits within its star's habitable zone and could have liquid water on its surface. Study leader Dr. Nikku Madhusudhan expressed surprise and cautious optimism about the discovery, which has raised questions about the possibility of alien life. The team plans to analyze new data from the James Webb Space Telescope to confirm whether this finding indeed signifies the presence of life on K2-18b.