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Copernicus, Nicolaus
Old Earth amateur Polish astronomer who developed the Copernican system, a model of the solar system in which all the planets orbit the Sun, thus overturning the earlier Ptolemaic System. His seminal work was De Revolutionibus Orbium Coelestium ("On the Revolutions of the Celestial Orb"), published in 430 BT (1543 AD).
 
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Development Notes
Text by M. Alan Kazlev
Initially published on 24 September 2001.

 
 
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