1.Project Blue Book
Well, we had to mention UFOs at some point, so the last declassified facts about Area 51 is Project Blue Book. Project Blue Book was conducted from 1952 to 1970. It was the largest of several similar projects that had the goal of verifying UFO sightings over the US and determine if they pose a threat to the national security. Truth be told, they weren’t just about the little green men, as several high-ranking officials believed that at least some of the UFO’s were, in fact, Soviet spy planes. The team behind the projects painstakingly crisscrossed reported UFO sightings against the flight logs kept in Area 51 of various experimental planes, namely U2 and Oxcart projects and determined that more than a half of sightings can be attributed to US airplanes. The rest were explained by natural phenomena. In short, no evidence of extraterrestrial visitors was discovered.
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