Ganymede

Overview
Ganymede is the largest moon in the solar system.

What it looks like
Ganymede is a grayish color like the moon.

When it was discovered and who
Ganymede was discovered in 1610 by Galileo Galiei. It was named after greek mythology. Ganymede and three other moons were discovered at the same time. Ganymede is the largest of them. This group is called the four galilean moons. Named after Galileo.

Facts

 * Ganymede is one of the only moons that has a magnetic field. The other being Triton.
 * Ganymede may be one of the first moons to be discovered, but Triton could have been the very first moon. More into Triton later.
 * Both Ganymede and Triton are the only moons with a known magnetic field.