In a potential breakthrough in the search for alien life, a team of international researchers has identified chemical ...

Using the James Webb Space Telescope, a team of astronomers has found a pair of gases in a distant alien world's atmosphere that can only be explained, currently, by the presence of biological life.

Astronomers have detected the most promising signs yet of a possible biosignature outside the solar system, although they remain cautious.

"For reference, this is thousands of times higher than their concentrations in the Earth's atmosphere, and cannot be explained without biological activity based on existing knowledge," Madhusudhan ...