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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 150 año aC - Ptolemy improves upon the geocentric model to account for retrograde planetary movements
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History of Cosmology
By
e
12 feb 2020
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1 ene 150 año aC
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~ 2177 years ago
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