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Nicolaus Copernicus -
Circle
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I shall now recall to mind that the motion of the heavenly bodies is circular, since the motion appropriate to a sphere is rotation in a circle.
Nicolaus Copernicus
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Hence I feel no shame in asserting that this whole region engirdled by the moon, and the center of the earth, traverse this grand circle amid the rest of the planets in an annual revolution around the sun. Near the sun is the center of the universe. Moreover, since the sun remains stationary, whatever appears as a motion of the sun is really due rather to the motion of the earth.
Nicolaus Copernicus
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There is no one center of all the celestial circles or spheres.
Nicolaus Copernicus
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The earth together with its surrounding waters must in fact have such a shape as its shadow reveals, for it eclipses the moon with the arc of a perfect circle.
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Yet the widespread planetary theories, advanced by Ptolemy and most other astronomers, although consistent with the numerical data, seemed likewise to present no small difficulty. For these theories were not adequate unless they also conceived certain equalizing circles, which made the planet appear to move at all times with uniform velocity neither on its deferent sphere nor about its own epicycle's center.
Nicolaus Copernicus
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No written law has ever been more binding than unwritten custom supported by popular opinion.
Carrie Chapman Catt
Nicolaus Copernicus
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Born:
February 19, 1473
Died:
May 24, 1543
(aged 70)
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