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

If you're a skeptic, these UFO sightings will convince you that the truth is out there—and it may not be from Earth.

Why do we tend to assume that UFOs are crafts carrying alien beings rather than alien beings themselves? How the UFO ...

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

National attention on UFOs has shifted in recent years, especially after the US government in the past decade has released ...

The volume includes 40 new files, including 19 videos.

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

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 ...

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

Pilot Kenneth Arnold took flight from Chehalis, Washington in his single-engine airplane, looking for a missing military ...