The little bright dot I point to is comet C/2011 L4 (PANSTARRS). Comets are solar system objects that mainly consist of rocks and ice. Some describe them as dirty snowballs. The orbit period of a comet may range from a few years to many thousands or even millions of years. The next time this comet visits us it will be in roughly 106.000 years.
The shot was taken at Kos island, Greece. This photo was particularly difficult to shoot. After several failed attempts for a week or so, due to the bad weather, I only had one chance to capture the faint, fast moving comet before it's lost through the clouds.
Camera Model Canon EOS 550D, Shooting Date/Time 13/3/2013 19:09, Author Chris Kotsiopoulos, Tv( Shutter Speed ) 1, Av( Aperture Value ) 5.6, ISO Speed 800, Lens Canon EF70-200mm f/4L USM, Focal Length 70.0 mm