Planet Venus (R-black spot) transits in front of the sun, seen in the early morning in Hamburg, Germany, on June 6, 2012. The event, only to be seen again in 105 years, began shortly after 2200 GMT on Tuesday, visible first from the Pacific and north and central Americas as a small black dot trailing across the solar surface. AFP PHOTO / ANGELIKA WARMUTH GERMANY OUTANGELIKA WARMUTH/AFP/GettyImages