Radio telescopes have long scanned quiet patches of sky for a lone, artificial-sounding ping, but a growing body of research ...

The search for extraterrestrial intelligence (SETI) has yet to detect alien technosignatures like radio waves, but the cosmos is vast, and there are plenty of places left to look. New research ...

A comet from another star system is sweeping through our cosmic backyard and, for the first time, astronomers have picked up ...