From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

Research indicates airport radar systems may unintentionally broadcast Earth's presence to aliens up to 200 lightyears away, ...

Brazilian psychic Vó Baiana is speaking out after aliens failed to appear during Brazil’s World Cup match against Scotland.

The Great Filter theory suggests advanced civilisations may self-destruct before contacting others, explaining the universe's ...

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

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

Science fiction stories about “alien” invaders are often political allegories for anxieties around immigration. Now, a government website depicts non-citizens as extraterrestrials.

And if aliens made of different stuff potentially possess consciousness, then why not minds made of silicon, metal, and ...

Add Yahoo as a preferred source to see more of our stories on Google. Illustration by Alberto Mier/CNN When the Trump administration registered the domains Aliens.gov and Alien.gov in March, UFO ...

The story behind the grainy footage of a dummy filled with butcher’s off-cuts is an extraordinarily eccentric and knotty joy – with the hoaxers resembling Scooby-Doo baddies ...

Emily Blunt and Josh O'Connor race around the Midwest trying to expose UFOs in a hectic adventure that lacks intelligent life.

Astrophysicist Neil deGrasse Tyson has a blunt request for the government as the Pentagon rolls out the highly anticipated UFO files — just “show the alien!” Tyson shared his two cents Monday on “The ...