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Working in Alexandria during the second century CE, Claudius Ptolemy was a Greek-speaking astronomer whose Almagest organized a detailed mathematical account of the heavens. Written around 150 CE, it placed a stationary Earth at the center and used geometric models to calculate the apparent motions...
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Claudius Ptolemy was a Greco-Roman scholar renowned for his astronomical theories developed during antiquity. His geocentric model—placing Earth at the center of the universe—shaped Western astronomy for over one thousand years. Ptolemy’s detailed work on geography and optics also significantly inf...
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