These shocking UFOs have been spotted over some of the biggest cities in the U.S. See more in this compilation from The Proof ...

In June 1947, Kenneth Arnold saw something strange in the sky. What he saw sparked a national UFO craze-but it was far from ...

Area 51 is back in the spotlight after a swarm of earthquakes near the Nevada military base. But the real story of Area 51 is ...

A campaigner is calling on the government to resume investigations into alleged encounters.