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OpenStudy (anonymous):

Which of these models of the solar system first proved that the sun is at one of the foci of Earth's elliptical orbit? a. Brahe model b. Kepler model c. Ptolemic model d. Copernicus model Anyone Help Please!

OpenStudy (anonymous):

Brahe supplied data. Kepler supplied analysis. Ptolemy model wrong. Copernicus had improved model. Did Kepler have a model? Yes, elliptical model. b best.

OpenStudy (anonymous):

@douglaswinslowcooper Thank you once again!(; haha

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