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On Revolutions Heavenly Spheres

  1. Nicolaus Copernicus Animated Google Doodle Models Heliocentric Solar System

    Copernicus’ began developing his theory of a heliocentric universe in the early 1500s and published his model in 1543 in “De revolutionibus orbium coelestium” (“On the Revolutions of the Heavenly Spheres”) – a model which wouldn’t replace the...