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

Michael Sheen is set to star in a Welsh comedy film about a UFO sighting - after sharing his own encounter with "a phalanx of ...

Why do we tend to assume that UFOs are crafts carrying alien beings rather than alien beings themselves? How the UFO phenomena continue to reveal unfounded human assumptions.

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

NASA's relationship with UFOs has evolved alongside broader changes in public and government interest in unexplained sightings.

Avi Loeb’s White House panel has asked the Pentagon for videos and files on unexplained aerial sightings ...

The National UFO Reporting Center reports there have been over 2,400 UFO sightings in Tennessee since 1995. Nashville, Knoxville and Memphis are among the top UFO hotspots.

Pilot Kenneth Arnold took flight from Chehalis, Washington in his single-engine airplane, looking for a missing military aircraft that had crashed. What he found ...

People gathered at the Kecksburg VFD UFO Festival hoping for a close encounter.

These shocking UFOs have been spotted over some of the biggest cities in the U.S. See more in this compilation from The Proof is Out There.