Disclosure Day, the upcoming sci-fi movie from director Steven Spielberg, revolves around a plot to prove that aliens exist.

Until the U.S. government has data or samples of alien material that can be shared, the story of extraterrestrial visitors is just a story.

Astrophysicist Neil deGrasse Tyson has backed former President Barack Obama after he suggested extraterrestrial life exists.

The Pentagon's release of files might help scientists shed light on unexplained phenomena and government secrets, experts said.

"Never-before-seen files" on UAPs posted by US Department of War, including some images taken by Apollo missions.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for ...