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This marks the beginning of the Scientific Revolution
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In Copernicus' lifetime, most believed that Earth held its place at the center of the universe. The sun, the stars, and all of the planets revolved around it.
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Copernicus completed a book called "Comentariolus" in which Copernicus summarized his heliocentric theory
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Johannes Kepler begins working with Tycho Brahe, this was his most productive year and he was assigned to study the orbit of Mars.
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Newton published Philosophiae Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy).