For instance, what if we really are being visited by aliens from other worlds and they turn out to be aggressive, violent, ...

Alan Turing, the father of theoretical computer science, made a proposal that has put AI development on a flawed path for ...

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

Australia's space agency said there's a completely rational, albeit cosmic, explanation behind the mysterious orbs that ...

Whether it's ghosts, aliens, or cryptids, these creepy real-life stories represent the scariest tales from the annals of human history. While horror movies can surely leave us terrified, it’s the true ...

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

Left to Right: Steven Yeun in "Nope," the alien in Steven Spielberg's "E.T." and Scarlett Johansson in "Under the Skin" (Universal Pictures / A24) It didn’t take long for stories about ...

The desolate, wind-swept desert of the Paracas Peninsula on the southern coast of Peru holds one of the most enduring mysteries of the ancient world. In 1928, the renowned Peruvian archaeologist Julio ...

Spaceships. That’s all I’m asking for. Just one actual stinking spaceship. I’d also take an actual alien body—I’ve been told that the government has some of them as well. Instead, the first “alien ...

WASHINGTON − The Pentagon released "never-before-seen" files on unidentified flying objects, and armchair investigators are furiously combing through them for evidence of "smoking gun" information ...

Add Yahoo as a preferred source to see more of our stories on Google. Distance, light speed, biology, and time may explain why alien civilizations never meet. (CREDIT: Wikimedia / CC BY-SA 4.0) "There ...