Spherical UFO seen in France in 1986

Summary

In March 1986, a witness in France saw a spherical object for a few seconds. The object was moving from east to west and had a blue color on the front part and blue-green on the rear. The witness estimated its length to be about 100 meters. Although the observation was brief, the testimony provides detailed descriptions of the object's features. No further data was collected, but researchers consider it could be an atmospheric phenomenon.