Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself?

SETI has spent decades listening for a sharp, well-defined radio signal that could indicate it was sent by distant intelligent life. Now researchers believe that space weather could distort and blur s ...

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

Answers to some of those questions could finally become public after President Trump's call last week for the release of ...

SCIENTISTS have uncovered an absolute stinker 34 light-years from Earth. A newly discovered planet, called L 98-59 d, is among the stinkiest ever with a strong rank stench worse than rotten egg ...

"Just because it’s crazy doesn’t mean it’s not true, but we have to look into the realities," law enforcement told reporters.

Wright-Patterson has played a central role in the US military’s real investigations into mysterious objects in the sky — from Cold War-era research programs to efforts to study what the government now ...

President Trump directed his administration to release files on UFOs and any "alien and extraterrestrial life," an issue that has drawn decades of fascination — and spawned more than a few wild ...

An alien-themed "micro resort" just minutes from Utah's Zion National Park has landed back on the market with a $1.49 million price tag. The commercially zoned compound, which was originally listed ...

Add Yahoo as a preferred source to see more of our stories on Google. Questions about what the federal government may know about extraterrestrial life in the cosmos — or possibly even here on Earth — ...