I photographed these 2 aerial oddities today, 09/10/08, high in the sky above Puttenham Common, Surrey, UK.
Above image is enlarged but otherwise untouched; below is the same shot yet shown in negative mode.
Nothing unusual was visible at the time of shooting; this was 1 of 20 random shots that I took as an
experiment to see whether I could obtain any sort of phenomena that was otherwise invisible to the naked eye. 

The shots taken immediately before and after this showed nothing out of the ordinary.                                                                                                        

Kenneth John Parsons