Portrait of Kepler

Kepler

German astronomer and mathematician (1571–1630)

Johannes Kepler was a German polymath who was an astronomer, mathematician, astrologer, natural philosopher and music theorist.

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Epitome of Copernican Astronomy1 passage
Epitome, BK iv, 890a-895b✓ correct
THE HARMONIES OF THE WORLD by J ohannes Kepler Concerning the very perfect harmony of the celestial movements, and the genesis of eccentricities and the semidiameters, and the periodic times from the same. After the model of the most correct astronomical doctrine of today, and the hypothesis not only of Copernicus but also of Tycho Brahe, whereof either hypotheses are today publicly accepted…