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

U.S. team of researchers detected signs of two chemicals in the planet's atmosphere long considered to be "biosignatures" indicating extraterrestrial life.

With the James Webb Space Telescope, astronomers say they are working to confirm potential evidence of life on a distant ...

Astronomers have found thousands of exoplanets — worlds beyond our solar system. Most of them are in single-star systems, ...