Add Yahoo as a preferred source to see more of our stories on Google. “If you found out we weren't alone, if someone showed you ...

Recently released FBI documents from 71 years ago detailed claims that aliens sent messages to members of one of the oldest UFO ...

The plan is to transmit information, including Earth's location, via radio waves, but critics warn it "could be harmful to humanity.

A declassified 1958 CIA memo has resurfaced in the latest UFO document release, revealing a mysterious reference to a destroyed "space message and its transmitter." The files also include claims ...