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

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

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

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

Researchers say it’s impossible to reach conclusions about UFO videos because information has been redacted.

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

"This is a detective story that can be resolved with better data," Harvard astrophysicist Avi Loeb told Newsweek.

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

The volume includes 40 new files, including 19 videos.

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

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

A Treasure Coast city ranked No. 11 in Florida for UFO sightings. See what city made the list. Which one do you think it is?