The hunt for intelligent life beyond Earth has quietly entered a more exacting phase, and one small, cool star has become a proving ground for how serious that search can be. TRAPPIST-1, a dim red ...

There has to be recognizable life out there, somewhere close enough we can find it. That's the idea behind SETI, and also the huge new alien-hunting Five-hundred-meter Aperture Spherical Telescope ...

Do aliens exist? Could Earth really be the only planet hosting intelligent life? Debates over the existence of extraterrestrials date back to the earliest Indigenous and western thought. The tools ...