An account in Yvelines, France

On November 29, 2016, around 12:20 AM, a person gets up and remains intrigued by what she sees through the window of her bathroom. The witness sees a shimmering light that grows and shrinks, as well as a hexagonal object of varied colors that shimmers, positioned above the neighbor's field. The observation lasts about twenty minutes, during which a few photos and videos are taken. The frightened witness wakes her husband, then goes back to bed. Processing the video, by making it possible to locate the lights on the glass bricks of the bathroom, makes it possible, without any doubt, to establish that the lights observed by the witness were due to the distortion of a light source by wavy glass bricks (see the investigation report). The light source was not identified. But that is not necessary, since the strangeness is explained and does not come from the light itself. GEIPAN classifies this case as A: observation of a reflection of an external light.