Explore 25 of the most famous movie aliens, from terrifying Xenomorphs to beloved E.T. Discover iconic extraterrestrials that ...

This UFO was identified by the U.S. Air Force Project Blue Book program as part of a Sputnik satellite hoax. TY GREENLEES / STAFF Air Force Musuem Shows Off "UFO" Artifacts from Project Blue Book.

What's in the UFO Files? Among the roughly 170 declassified files were materials tied to NASA’s Apollo missions, including a photo labeled ‘unidentified phenomena’ captured from the moon during the ...

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 ...