Spherical UFO changing color in Maine 1951

Summary

In March 1951, an observer in Presque Isle, Maine, spotted a spherical object near the horizon that changed color every six seconds. The object, seen for 10 minutes, was moving toward the horizon and was initially mistaken for Venus due to unusual atmospheric conditions. Although other sightings were reported in the area, the official conclusion pointed to an astronomical explanation. The report details observations of color, trajectory, and duration, with testimonies from multiple witnesses.