The observation took place in Nice/France the 08/08/2005 The first photo was taken to / La premie photo a prise : 18:04:11 The second photo / La seconde : 18:04:14 The third photo / la troisie : 18:04:16 The four photo / La quatrie : 18:04:18 The images were accentuated and contrasted under Photoshop for better visibility. I think that it is an UFO for the following reasons: 1. According to my knowledge in photography, I think that the photographed object evolved at an altitude higher than the plane. If it had been lower, its shape would have been better defined and if it had flown at the same height as the plane it would have been clearer also. 2. Its speed is sharply superior to that of the plane in view of the distance it covered on the montage on the last photo. Thus, it cannot involve some meteorological balloon or other plastic bags moving with the wind at this height 3. Its curved trajectory eliminates any possibility that it can involve a satellite or a meteorite, which it would have left a trail behind. Photos are taken with a gap of two seconds (I capture the EXIF metadata to show the timing) except for the one that is three seconds of the next. Knowing this, it seems between the third and the fourth photo the object accelerates! The montage of four photos below does not claim to be exact for at the distance crossed by the plane, but just to give an approximate estimation of the trajectory of the object. I give you my word that it is not a photomontage trick nor a hoax! Photos were passed on to an ufologist specialist for analysis Thanks to amorales for translation !!! ;)