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Small craters on the Earth, Moon, Mercury, and Mars all display a simple, bowl-shaped appearance. Larger craters show more complex structures, including central peaks, wall terraces, and floor deposits, and are shallower than simple craters. The diameter at which this transition occurs depends primarily on the strength of the planet’s gravity field. Diagram based on Figure 2 in paper by R. J. Pike in the Proceedings of the 11th Lunar and Planetary Science Conference, 1980 Right
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