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 ...

Alien probes could be hiding among us in plain sight as we search for them in the wrong places. This is the theory of professor Alex Ellery of Carleton University who argues that if self-replicating ...

A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University have suggested.

Landmark UFO documents smuggled out of Russia 30 years ago — and just publicly revealed — show the Soviets investigated ...

Is 3I/Atlas an interstellar alien vessel or simply an intriguing, unique rock hurling through the cosmos? That debate has been raging ever since the comet, only the third known interstellar object to ...

Harvard astrophysicist Avi Loeb claims humanity missed a historic chance to find alien life on interstellar object 3I/ATLAS, warning it may have been a spacecraft on a seeding mission.

A small space telescope with the eyes of a giant will spend the next year studying the planets around distant stars, and the University of Arizona will serve as mission control. The refrigerator-sized ...

Here’s what you’ll learn when you read this story: The Search for Extraterrestrial Intelligence (SETI) focuses on finding technosignatures—potential signs of alien technology. If we look carefully, we ...

A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University have suggested.