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Reviewed on June 1, 2019 | Reference
Unidentified flying objects (UFOs) became a part of the public consciousness after a sighting over North America's Cascade Mountains in 1947, when a private pilot spotted nine shiny discs moving in formation at an estimated speed of more than 1,200 mph. Multiple books on UFO phenomena followed in the 1950s, and the movie industry started producing films related to extraterrestrials. In this revised and updated third edition...Log In or Sign Up to Read More