Enjoy a Galileo spacecraft photo of Ganymede, a Jovian moon which is larger than the planets Mercury and Pluto.

View a computer simulation of the surface of Ganymede, one of Jupiter's moons. Provided by Astronomy Picture of the Day.

Astronomy Picture of the Day offers a high-resolution photograph of the Jovian moon Io, taken in February 2000 by the robot spacecraft Galileo.

Image taken by the Cassini spacecraft reveals Jupiter and two of the planet's Galilean satellites, Europa and Callisto.

Enjoy the time-lapse sequence captured in 1979 by the Voyager 1 spacecraft as it approached Jupiter. Watch the rotation of the Red Spot.

False-color infrared image from the Galileo spacecraft's NIMS instrument reveals an impact crater on Jupiter's large ice moon Europa.

Movie shows a complete rotation of Jupiter's smallest Galilean moon, Europa. Find image credits and basic facts about the moon.

Two images taken by the Galileo spacecraft in 1998 captures the Astypalaea Linea region on Europa, one of Jupiter's moons.

Time-lapse sequence shows a complete rotation of Io, one of Jupiter's moons. Images provided by the Voyager and Galileo missions.

Enjoy a composite image of Jupiter and its four large Galilean moons: Io, Europa, Ganymede and Callisto.

Cassini spacecraft image captures the moon Ganymede in orbit around Jupiter. The planet's Great Red Spot is also visible.

Photograph from NASA's Cassini Imaging Team shows Jupiter's outer layers of clouds as they would look on a flat surface.

View a Cassini spacecraft mosaic of Jupiter's polar region, which bears a strange resemblance to a brain. Includes photo credits.

Dramatic photograph shows Io, one of Jupiter's moons, above the giant planet. The moon's shadow is visible on the planet surface.