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The Winter 2010 issue of The Earth Scientist includes a variety of educational resources, ranging from astronomy to glaciers. Check out the other publications and classroom materials in our online store.
This image shows the dark terrain of Ganymede.
Click on image for full size
NASA

Dark Terrain of Ganymede

This image shows an example of the dark terrain of Ganymede. This image shows frost on the ground. The next image shows more of the dark terrain.

The dark terrain is much older than the light terrain of Ganymede. Evidence for the age of the surface is found in it's many craters. Is this respect it very much resembles the surface of Callisto.


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Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

Dark Terrain of Ganymede

This image shows an example of the dark terrain of Ganymede. ...more

Light Terrain of Ganymede

This image shows an example of the light terrain of Ganymede. The image shows the contrast between the light terrain and the dark terrain of Ganymede. The light terrain is where the grooves of Ganymede...more

Surface of Callisto

The surface of Callisto is deeply pockmarked with craters. It looks to be perhaps the most severely cratered body in the solar system. There are also very large craters to be found there. The severity...more

Surface of Ganymede

The surface of Ganymede is halfway between that of Callisto and that of Europa. Portions of the crust are of ancient age, while other portions are relatively new. The little white dots shown in this image...more

Amalthea

Amalthea was discovered by E Barnard in 1872. Of the 17 moons it is the 3rd closest to Jupiter, with a standoff distance of 181,300 km. Amalthea is about the size of a county or small state, and is just...more

Callisto

Callisto was first discovered by Galileo in 1610, making it one of the Galilean Satellites. Of the 60 moons it is the 8th closest to Jupiter, with a standoff distance of 1,070,000 km. It is the 2nd largest...more

Evolution of Callisto

Most of the moons and planets formed by accretion of rocky material and volatiles out of the primitive solar nebula and soon thereafter they differentiated. Measurements by the Galileo spacecraft have...more

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