UFO sighted in 1956 in Colorado

Summary

An officer in Fort Collins, Colorado, reported in 1956 the sighting of a round object the size of a baseball, with red and green colors that reversed. The object appeared silver at times and moved straight from north to west. The observation lasted one hour, ruling out the possibility of an aircraft. The report concluded the phenomenon was likely astronomical, coinciding with the movement of the star Vega. Investigators suggested the northward motion might be due to visual interpretation rather than actual movement of the object.