As the life of the Galileo probe comes to an end, its missions become ever riskier. Learn about its latest gauntlet to run.
Galileo measured the magnetic field of Ganymede, Jupiter's largest moon, and captured new images of its surface.
Take a look at some of the images captured by the Galileo spacecraft of the Jupiter moon Io. Images reveal the presence of numerous volcanoes.
Galileo zoomed in on the yellowish sulfuric surface of Jupiter's moon Io to find snow, mountain ranges and hot-lava lakes.
Images sent to Earth from NASA's Galileo probe show that Jupiter's largest moon, Ganymede, may have a large saltwater ocean under its surface.
Get the details of this NASA project, and everything from high-tech Doppler photos to QuickTime animations of the Jupiter probe.
Find out what scientists expect to find when the Galileo spacecraft flies by Europa, one of the moons of Jupiter.