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Icy Moon



This is an image of Europa
Click on image for full size version (92K GIF)
Image from: NASA
Icy moons are moons which are made of ice. These moons are unlike the earth's moon, which is made of rock.

Perfect examples of icy moons are 3 of the Galilean satellites, Europa, Ganymede, and Callisto. Except maybe for Europa and Triton, these moons have no air.

But the surfaces of these moons, especially Ganymede, show proof that in their history, something may have happened inside which changed the way the moon looks today. Activity inside the moon could also provide an environment in which life could exist.




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Last modified February 9, 1996 by the Windows Team

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