Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

Language and radio signals may not matter to aliens. Instead, they might be using patterns to leave a biological fingerprint.

Since its debut, "Star Trek" has introduced decades worth of new characters, locations, and alien races, but only a few ...

While imperceptible to humans, these tiny delays are significant for experiments that rely on pulsars as ultra-precise cosmic ...

A crowd-sourced search for alien intelligence called SETI@Home is in its final stages, analyzing 100 radio signals of ...

The sheer scale of Carrazco-Gaxiola’s survey, titled “An All-Sky Spectroscopic Reconnaissance of More Than 2,100 K Dwarfs ...

Real scientific efforts at universal communication have also involved mathematics and numbers. The covers of the Golden ...

The search for extraterrestrial life in this vast universe needs all hands on deck. A crowd-sourced project from UC Berkeley ...

Of course, ‘alien’ can mean many things and the depiction of aliens that we’ve seen in films like E.T and Ridley Scott’s Alien franchise probably won’t translate to our potential galaxy companions, ...

Harvard astrophysicist Avi Loeb's speculative claim that 3I/ATLAS could be an alien AI probe ignites scientific debate, NASA ...

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien ...

What if life on Earth didn’t begin here at all, but arrived from somewhere else in the universe? Panspermia is the ...