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

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth could thus be overlooking prime evidence of alien intelligence.

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.

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

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.

Director Steven Spielberg claimed aliens have already visited planet Earth – and now scientists said he may be on the money, ...

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an alien spaceship.

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

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.