Galileo's Ganymede
Ganymede the largest moon of Jupiter and the wider solar system was discovered by Galileo Galilei on January 7, 1610, also the first moon aside from our moon was discovered. Ganymede is a name from Greek mythology and is the name of a young prince of Troy who was carried away by Zeus (Jupiter in Roman mythology) to serve as a cupbearer for the gods because of his magnificent beauty. Notable info Formed approx 4.5 billion yrs ago Radius: 1,635 m/2,631 km Third farthest satellite from Jupiter (665,000 m/ 1.07 mil km ) Bigger than Mercury and Pluto 9th largest object in the Solar System One day is an Earth week & one year is 12 Earth Years Structure Ganymede has a metallic iron core surrounded by a spherical shell of ice and the solid surface, underneath the ice is very lumpy from either rock formations or other tectonic activity. this structure can be compared to a club sandwich and was suspected of having underground oceans from the 1970s. Ganymede also has the unique prope
