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

The U.S. military released a new batch of files related to UFOs, including one report from a Navy pilot who said a mysterious object was "unlike anything I had seen" in 28 years of service.

No, this is not behind-the-scenes footage of Spielberg's latest film "Disclosure Day" ... these are recently released files from the Pentagon showing unidentified aerial phenomena in our skies. One ...

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

The Pentagon has released another batch of ‘UFO Files’ with footage of unknown objects in the sky—here are the most common alien theories, explained. Another batch of “UFO Files” have been dropped by ...

Catch up on the most interesting science news from the last week.

New claims that the United States has recovered remains of four separate species of alien life are sending shockwaves throughout the UFO disclosure movement, further drumming up conversations ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House scientific advisory council on UFOs.

The Trump administration on Friday launched a new website that will house a collection of “new, never-before-seen” files about UFOs, according to the Pentagon. (And yes, we’re apparently okay with ...

The Pentagon released its fourth batch of files related to unidentified anomalous phenomena (UAPs) Friday, which contains 40 files that include an account of a UAP described by a military as "unlike ...