The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new paper.

Alien civilizations may have left traces. We just may not have been looking in the right place.

Once small enough, these technograins might gain a trip out of its host solar system by a solar wind that overcomes the star's gravity holding it back. These motes of dust are then free to roam the ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

Otherworldly aliens are as important to the "Star Wars" saga as a rousing score or elaborate outer space fights between cool spaceships. From the very first entry in this narrative, "Star Wars" has ...

UPDATE: Following plenty of online interest, the $119.95 Supergirl Metal Print that accidentally features a background alien from the Star Wars universe is no longer available to purchase. IGN ...

Astronomers have revealed new details about the makeup and age of a visiting comet that was born around a distant star. They ...

A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow ...

As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...