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

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

The Pentagon on Friday released a new group of documents and videos related to UFOs, or UAPs, with 72 more documents, images ...

If you're a skeptic, these UFO sightings will convince you that the truth is out there—and it may not be from Earth. Eerie UFO sightings we can’t 100% explain Everyone has an opinion when it comes to ...

From the Navy’s infamous Tic-Tac encounter to thousands of recent reports, believers say some of the strangest UFOs may be hiding underwater.

Stacker compiled a ranking of cities with the most UFO sightings in Alaska using data from the National UFO Reporting Center.

Several notable UFO encounters were mentioned throughout Thursday's Disclouse Forum.

The Pentagon on Friday released a third batch of vintage classified files related to “flying saucers” and other unidentified anomalous phenomena — better known to most Americans as unidentified flying ...

Kansas City has long been a hotbed of activity, says Margie Kay, director of the Missouri chapter of the Mutual UFO Network ...

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 ...

Why are we allowing unidentified objects to operate with impunity in our skies?” one expert testified Tuesday.