Theoricae mediceorum planetarum ex causis physicis deductae
$45,000 · Offered by Sophia Rare Books
First edition
Florence: Ex Typographia S M D, 1666. First edition, very rare, and an exceptionally fine copy, of Borelli’s important work on celestial mechanics, prefiguring the Newtonian theory of universal attraction. Borelli revived “Kepler’s theories on the planetary orbits … However, unlike Kepler, he believes natural motion to be in a straight line rather than a circle, hence requiring a form of gravitational force to
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