SummaryPlanet, called K2-18 b, is 8.6 times the mass of EarthIt is located about 124 light-years from EarthGases found are the same as those produced by algae on EarthScientists do not announce discovery of actual alien lifeWASHINGTON, April 16 (Reuters) - In a potential landmark discovery, scientists using the James Webb Space Telescope have obtained what they call the strongest signs yet of possible life beyond our solar system, detecting in an alien planet's atmosphere the chemical fingerprin...