Photographer Thierry Legault captured this picture of the International Space Station and the shuttle Atlantis as their orbit took them in front of the sun — a transit that lasted all of a half a second.
Those two specks in the upper right are Atlantis and the ISS. According to Discover Magazine's Phil Plait:
Atlantis had just started its pitch maneuver, designed to show its belly to the crew on the ISS so they can inspect it for heat tile damage. That means this image was taken shortly before the Orbiter docked with the station, on May 16th. Thierry was in Madrid specifically to get this shot.
(Via Bad Astronomy)