Transcription: In the early days of the solar system, there were vast amounts of comets and asteroids flying around, violently smashing into the young planetary bodies. Much of the evidence for this ancient activity is to be found on moons of the planets, where comet and asteroid impacts are not eroded by dynamic conditions on larger worlds. Moons, or natural satellites, have been found in a wide variety variety of shapes and sizes, ranging from Saturn's large moon Titan, which has its own thick atmosphere, to the Martian moon Deimos, which is nothing more than a captured asteroid. Other moons, such as Miran ...
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