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

A strange UFO sighting in Susa Valley, Italy, leads to the construction of Sacra di San Michele, and according to theorists, ...

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

The National UFO Reporting Center reports there have been over 2,400 UFO sightings in Tennessee since 1995. Nashville, ...

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

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

On December 26, 1980, a UFO crash site in Suffolk Country, England has become one of Britain's most famous UFO encounters in this clip from Season 12, "The Mystery of Rudloe Manor." ...

The US government repeatedly publishes videos and documents on UFO sightings. A controversial physicist is now supposed to ...

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

It was the late 1950s when Ruben Uriarte saw his first UFO — a silvery, oval-shaped object hovering by the Oakland foothills.

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