Conical UFO seen in California

Summary

In December 1957, a witness in Parkview, California, described a bright conical object moving from east to west. The object had a square body and a round part below, shining as brightly as a new nickel. The observation lasted ten minutes, which was notable for its duration and clarity. Although possibilities like an aircraft or astronomical event were considered, investigators concluded it was likely a balloon. The detailed description and straight path of the object support this interpretation.