Harvard's Avi Loeb argues 3I/ATLAS shows signs of alien technology, from its 0.2% probability flight path to bizarre metal ...

With 3I/ATLAS streaking away from our planet, speculation remains as to whether the interstellar comet is alien or not.

Alien spaceships are in a league of their own, though. Earth does have a force field that could make a spacecraft landing ...

Is 3I/ATLAS an alien probe? Breakthrough Listen uses the Green Bank Telescope to search for technosignatures as the ...

Interstellar object 3I/ATLAS, the third such visitor ever observed, is exhibiting unusual energy and chemical behavior as it ...

A small icy moon orbiting Saturn is a likely candidate to host outer space life, as a major space organisation is targeting ...

Learn about the 3I/ATLAS mystery as Harvard's Avi Loeb reveals 'wobbling jets' that could suggest the interstellar visitor is ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most disturbing alien races in the galaxy.

They're some of the most sterile places on Earth - but scientists have discovered dozens of new bacterial species inside NASA ...