The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter took two images of the larger of Mars' two moons, Phobos, within 10 minutes of each other on March 23, 2008. This is the first.
NASA's Mars Reconnaissance Orbiter took two images of the larger of Mars' two moons, Phobos, within 10 minutes of each other on March 23, 2008. 3D glasses are necessary to view this image.
This image shows Phobos, the larger of Mars' two moons, as it transits in front of the sun. This image was taken by NASA's Mars Exploration Rover Opportunity during the afternoon of the rover's 3,078th Martian day, or sol.