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

The Pentagon released its fourth batch of UFO files Friday following President Trump’s declassification order earlier this ...

Neil deGrasse Tyson calls on the government to just show the alien, saying Americans are ready for disclosure after years of hearings and UAP files.

Steven Spielberg's new blockbuster coincides with real-world disclosures about the government's investigation of unidentified phenomena. But there's no proof of aliens yet.

We might not be alone in the Universe. While combing through data from 1949, scientists spotted something impossible: strange ...

Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden ...

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

"Disclosure Day" director Steven Spielberg opens up to USA TODAY about aliens, AI and why he'll never quit making movies.