Galilean Moons

The largest moon in the solar system

This moon's surface is primarily water ice, believed to cover a global ocean beneath.

Name the 4 Galilean Moons

This mission ended when the spacecraft deliberately impacted Jupiter on Sept. 21, 2003.

This moon's surface is covered in sulfur and lava.

Name the most volcanically active moon

This moon's orbital period is 16.689 Earth days

This mission revealed volcanic activity on Io

Io, Europa, Ganymede, and Callisto were discovered by _____ in the year _____.

It is estimated that this moon has twice the amount of liquid water compared to Earth

This moon has its own magnetic field.

This mission provided the first close-up images of Jupiter and its moons

This mission discovered strong evidence for subsurface ocean on Europa