A luminous UFO seen in Wisconsin in 1957

Summary

A small round object with red and white flashing lights was observed in Walworth, Wisconsin, in 1957. The witness described it as silent and without a tail, moving up and down in the night sky. Although no photos or radar data were recorded, investigators concluded it was likely a balloon with attached lights. The description matched the behavior of a balloon launched at night, suggesting the phenomenon was not a conventional UFO. The observation lasted nine minutes before the object disappeared upwards.