This self-portrait of NASA's Mars Exploration Rover Opportunity comes courtesy of the Sun and the rover's front hazard-avoidance camera (hazcam). The dramatic snapshot of Opportunity's shadow was taken as the rover continues to move farther into "Endurance Crater." The image was taken on sol 180 (July 26, 2004), a date that marks achievement of fully double the rover's primary 90-sol mission.
NASA/JPL
<a rel="nofollow" class="external free" href="http://photojournal.jpl.nasa.gov/catalog/PIA06739">http://photojournal.jpl.nasa.gov/catalog/PIA06739</a>