This is a composite image of the small moons of Saturn.
Click on image for full size
NASA

Surface and Interior of Small Moons

The small moons are too small to be seen, so their structure can only be guessed at. What can be seen indicates the surfaces seem to be covered with craters. Since the density indicates that the composition of the small moons is mostly ice, there is probably a small core of some rocky material buried inside, and overlayers of ice of various phases.

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