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Which of. the following was not a major advantage of copernicus's sun-centered model over the ptolemaic model? (a) it made signifi. cllntly better predictions of planetary positions in our sky. (b) it offered a more natura1explaruttion for the apparent retrograde motion of planets in our sky. (c) it allow; ed calculation of the orbital periods a11d distances of the planets.
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Which of. the following was not a major advantage of copernicus's sun-centered model over the ptolem...
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