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Global History & Geography for 14-15 Yr olds USA) (Thomas Caswell)
Global History & Geography for 14-15 Yr olds USA) (Thomas Caswell)
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Copernicus, Nicolaus
(1473-1543) Polish astronomer who wrote
On the Revolutions of the Celestial Spheres
. Theorized that the Earth orbited the Sun (heliocentric system) and laid the foundations of modern astronomy.
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Global History & Geography for 14-15 Yr olds USA) (Thomas Caswell)