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OpenStudy (anonymous):
Which contribution did Copernicus make to our view of the solar system? A. He proposed the sun-centered model of the solar system. B. He showed that planets moved in elliptical orbits. C. He proposed that gravity kept the planets in their orbits. D. He proposed the earth-centered model of the solar system.
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OpenStudy (anonymous):
A, i took the test before :P
OpenStudy (anonymous):
thanks
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