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

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

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

Internet-famous UFO stories so wild they may just be true Alien and UFO sightings have been anomalies for decades. While the ...

A third batch of declassified UFO files were released by the Pentagon Friday. The latest such release in the Trump administration's new wave of public disclosure of Unidentified Anomalous Phenomena ...

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

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

There are a lot of documentaries about UFOs that don't devolve into sensationalist conspiracy theories. These are the best ones.

The latest batch of UFO files from the Pentagon includes artistic renderings by credible witnesses.

Buzz Aldrin is quoted as having made three observations, one of which was of something with a "sizeable dimension." ...

In early 2008, residents in and around the small central Texas town of Stephenville experienced something unexplainable: UFO ...

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