This picture shows images of the Galilean Satellites taken by the Galileo spacecraft, as well as details from the surfaces of these moons.
Click on image for full size
NASA
Galilean Satellites
The Galilean satellites are the 4 big moons of Jupiter,
Io,
Europa,
Ganymede, and
Callisto. These moons are called Galilean because they were discovered by
Galileo Galilei in 1610.
In this picture, Io, and Io’s surface, are shown on the left-most end, then Europa, and its surface, then Ganymede, then Callisto. Of Jupiter’s 60 moons, these four are the biggest.
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