The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, ...

A recent NASA-backed study suggests that alien civilizations could potentially detect some of the signals humans send into space. Researchers from Pennsylvania State University and NASA's Jet ...

The Search for Extraterrestrial Intelligence (SETI) focuses on finding technosignatures—potential signs of alien technology. If we look carefully, we might have a chance at detecting their ...