Buy the Opportunity Looks Back 3D space photo.
High quality MER Spirit picture, slide, or Duratrans backlit transparency. NASA photograph PIA05212.
This 3-D view from behind the Mars Exploration Rover Opportunity shows the path the rover has traveled since rolling 1 meter (3 feet) away from its now-empty lander on the seventh martian day, or sol, of its mission. On the 12th sol, Opportunity drove another 3 1/2 meters (11 feet), and then, one sol later, another 1 1/2 meters (5 feet). On its way, the rover twisted and turned in a test of its driving capabilities. Opportunity is headed toward the eastern edge of the rock outcropping along the inner wall of the crater where it landed. This image was taken by the rover's rear hazard-identification camera.
You will need 3D glasses.