[Footnote 502: Ptolemaic schemes. The system of geography and astronom… — Essays
SAPIR 861
[Footnote 502: Ptolemaic schemes. The system of geography and astronomy taught in the second century by Ptolemy of Alexandria; it was accepted till the sixteenth century, when the Copernican system was established. Ptolemy believed that the sun, planets, and stars revolve around the earth; Copernicus taught that the planets revolve around the sun.]
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