Unconventional Flying Objects: A Former NASA Scientist Explains How UFOs Really Work

Paul Hill was a well—respected NASA scientist when, in the early 1950s, he had a UFO sighting. Soon after, he built the first flying platform and was able to duplicate the UFO's tilt—to—control maneuvers. Official policy, however, prevented him from proclaiming his findings. "I was destined," says Hill, "to be as unidentified as the flying objects."

For the next twenty—five years, Hill acted as an unofficial clearinghouse at NASA, collecting and analyzing sightings' reports for physical prop...