The former president on why those waiting for Trump to disclose the existence of aliens are sure to be disappointed, and insisting first contact "hasn't happened yet."

NASA administrator Jared Isaacman says declassified UAP files show real unexplained phenomena but no alien bodies or crashed ships have been found.

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

In “Disclosure Day,” out Friday, Steven Spielberg is once again inviting audiences to ponder the existence of extraterrestrial life — and the implications it would have for religion on Earth. But Spielberg is hardly the only one making headlines of late about UFOs and the possibility of life on other planets.

Steven Spielberg discusses his new UFO film "Disclosure Day" on Michelle Obama's podcast, saying it explores whether aliens have already reached Earth.

On Religion columnist Terry Mattingly writes about the centuries-spanning debate over UFOs, aliens and their religious implications.