Images of Phobos, taken by the Soviet Phobos mission to Mars, prior to the loss of the spacecraft. Small images do not link to graphic files.

This diagram shows selected moons of the Solar System and includes Earth for scale. Some of the moons shown include Phobos, Deimos, Io, Europa, Ganymede, Callisto, Titan, Hyperion, Ariel, Umbriel, Triton, Proteus and Charon. For more...