UFO sighted over Pennsylvania in 1952

Summary

In May 1952, a pilot reported an unidentified object seen from the ground in Pennsylvania. The object, described as red when approaching and white when receding, had a circular shape and moved in a straight, level path. The sighting lasted 25 seconds, and two witnesses confirmed the event. Although several explanations were considered, such as balloons or aircraft, the data was insufficient for a definitive evaluation. The report notes that no jet or rocket exhaust was visible, adding to the mystery. The exact location of the sighting remains unknown.