In June 1947, Kenneth Arnold saw something strange in the sky. What he saw sparked a national UFO craze-but it was far from ...

He estimates hundreds of incidents occur annually that baffle military leaders.

A triangular UFO photographed over Emiliano Zapata in central Mexico has prompted multiple witness reports across nearby ...

Check out 5 MORE mysterious UFO sightings that just can’t be explained, in this The Proof Is Out There compilation.

From insects to the moon, people have mistaken very Earthly phenomena for UFOs many times.

An audio tape reportedly exists of a UFO briefing between Air Force officials and scientists in 1952.

Orlando ranks No. 3 among U.S. cities for UFO sightings, with 13.8 sightings per 10,000 residents. Sarasota and Boise top the ...

“Mr. Chair, the truth is out there.” That’s what Rep. Nate Davidson, D-Cumberland and Dauphin said during a Tuesday Pa. House ...

Pols and experts claim that there’s a long-unheard secret tape of an “Invasion of Washington” UFO briefing – and they say the ...

In 1947, pilot Kenneth Arnold's report of strange objects over Mount Rainier and a fateful media misquote created the 'flying ...

Christopher Mellon, a former high-ranking official in the U.S. Defense Department, says U.S. military leaders are baffled by ...

On a dark night several decades ago, Kate Bush pulled over by the side of the road to discover a strange phenomenon in the ...