An account in Loire-Atlantique, France

Over several nights starting on April 15, 2007, at a campsite in Le Croisic (44), several witnesses observed a luminous point in the sky. The phenomenon appeared as a large luminous ball with many color changes of green, red, and blue observed through binoculars. During the investigation, the gendarmes observed the phenomenon themselves and took a series of photographs as well as a video sequence of about 13 seconds. The preliminary analysis was entrusted to an expert astronomer who quickly leaned toward the hypothesis of an astronomical phenomenon, the sky being particularly clear during this period and favorable to spectacular observations. In order to support this hypothesis, a field investigation was conducted from June 11 to 13, 2007: it was demonstrated that the witnesses had observed Sirius, a star particularly visible at this time of year. Several calls to GEIPAN during the same period also reported particularly bright stars. The investigation also served as support for the filming of the program "Pièces à convictions" of June 29 on France 3.