Project 10073 Record Card and Related Correspondence: Fireball Sighting, 10 October 1957

This collection of documents details the investigation into a bright, flaming object observed in the skies over Utah and Wyoming on October 10, 1957. The sighting, which occurred shortly after the Soviet Union launched a satellite, generated significant public concern and national attention. The object was described by multiple witnesses, including Navy and Air Force pilots, as a large, brilliant blue-white flaming object with a long tail, emitting sparks and making hissing noises accompanied by explosions. The object was reported to have traveled on a West-Southwest course and was estimated to have been visible for between 1 and 45 seconds.

Initial reports suggested the object might have struck the ground, prompting the 1006th Air Intelligence Service Squadron to conduct an investigation. Local county sheriffs in Duchesne and Utah counties were notified to search for debris, and investigators interviewed approximately twenty sources in the area. A Navy pilot reported that the object narrowly missed his aircraft. Despite the initial alarm, the investigation concluded that the object was a fireball meteor that disintegrated before impact. The official report, filed by Captain Alfred T. Schmitz of the 4773d Ground Observer Squadron, explicitly states that the object was not the Soviet satellite, which was located near South Africa at the time. The documents also include references to other contemporary sightings, such as a UFO reported over New York in September 1957, which was identified as the comet 'Markos', and another object in New York that was considered to be a weather balloon. The investigation into the Utah fireball was closed with the conclusion that it was a rarely seen form of meteorite, and no further action was contemplated unless physical pieces were recovered.