Ptolemy, Claudius Ptolemaeus (c. 2nd century CE)Egyptian
astronomer, mathematician, and geographer who flourished in Alexandria.
He is credited with the “Ptolemaic system,” a geocentric view of the
universe that would dominate scientific thinking for 13 centuries, until
<!g>Copernicus (1473 - 1573) put forth
his <!g>heliocentric theory of the universe.
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by: <!g>Marty Maddox/<!g>CTNS
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