What if an alien civilization did not just exist somewhere in the universe, but actually reached Earth in the distant past?

A recent theory proposed by a NASA scientist suggests that extraterrestrial civilizations may not possess the wildly advanced technology that many UFO enthusiasts expect. This perspective, which ...

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

IMAGES of an unusual pyramid-shaped structure on Mars that look like those in Egypt have reignited wild theories about aliens ...

Add Yahoo as a preferred source to see more of our stories on Google. Renowned astrophysicist Neil deGrasse Tyson continues to dismiss the hypothesis of a Harvard University professor that a massive ...

Movies like "Disclosure Day" and "Project Hail Mary" renew our fascination with extraterrestrials and the idea that humankind ...

Here’s hoping there are aliens at Area 51. For one thing: they probably have cool spaceships. For another, the ...