Diamond-shaped UFO over Iowa in 1957

Summary

In December 1957, a witness in Clarksville, Iowa, observed a mysterious object that appeared diamond-shaped and was about the size of a fist. The object, initially stationary, displayed green lights on one side and amber or rusty lights on the other. Although the observer described it as neither a balloon nor a conventional aircraft, authorities suggested it could be a balloon or an unidentified plane. The detailed description of the object and its behavior drew attention for its uniqueness and clarity.

The official report, though brief, indicated that there was insufficient data for a conclusive evaluation. However, the witness insisted that what they saw was neither an astronomical phenomenon nor a conventional aircraft. This sighting, recorded on an official form from the time, remains a mystery adding a new chapter to sightings of the 1950s.