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

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

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

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

Astrophysicist Neil deGrasse Tyson has a blunt request for the government as the Pentagon rolls out the highly anticipated ...

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

Steven Spielberg's 'Disclosure Day' explores UFOs and alien encounters, inspired by recent US whistleblower claims. The film blends political intrigue with Spielberg's evolving belief in ...

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

The White House turned a legal term into a science-fiction spectacle. The real story is not the theatrics. It is how language ...

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 ...

Spielberg’s new movie follows a man who uncovers the possibility that humans are not the only beings in the universe, a truth ...

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