Johannes Kepler Quotes
Why are things as they are and not otherwise?
Citations
Kepler, Johannes. Mysterium Cosmographicum. Translated by A. M. Duncan, Abaris Books, 1981.
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Johannes Kepler was a German astronomer, mathematician, and astrologer. He is a key figure in the 17th-century scientific revolution, best known for his laws of planetary motion, and his books Astronomia nova, Harmonices Mundi, and Epitome Astronomiae Copernicanae. These works also provided one of the foundations for Newton's theory of universal gravitation.