Download Ganimedes Jupiter Pictures. Ganymede is the largest moon of jupiter and is the largest in our solar system with a diameter of 5,262 km. Plans for the mission include detailed studies of jupiter's moons ganymede and callisto as well.
It was probably also discovered.
So, from ganymede, jupiter would look about 15x the size of a full moon from earth. In 1610, galileo galilei looked up at the night sky through a telescope of his own design. If there was no ocean on ganymede, the aurorae would rock back and forth across about six degrees of the moon's circumference as it orbited jupiter. Ganymede, largest of jupiter's satellites and of all the satellites in the solar system.