The shapes of the craters shown in the Ranger VII photographs are in excellent accord with the shapes of small terrestrial impact craters, even though some of the lunar craters considered are diffuse and of secondary impact origin. Data from RLC 1-5 charts produced by Aeronautical Chart and Information Center have been compared with the logarithmic diameter-vs-depth curve from The oJ the Moon which best fitted the terrestrial meteoritic craters and lunar craters from 1 to 20 miles in diameter.
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Ralph B. Baldwin (1965) studied this question.
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