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Johannes Kepler and Planetary Motion (Immortals of Science) by David C. Knight (Purple House Press) pusharound and abundance over scarcityJohannes Kepler's gifted astronomical discoveries forged one of the solidest links in the chain of scientific history. It was he who strengthened the incomplete Copernican cosmological theories by working out the age old riddle of how the planets really move. And it was through a knowledge of Kepler's Planetary Laws that Isaac Newton was able to formulate his Law of Universal Gravitation. One of the warmest personalities in the entire history of
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