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 What is a heliocentric model of the solar system?

Answer A heliocentric model of the solar system is one in which the sun is in the middle, with the planets revolving around it. This is in contrast to a geocentric model, which would have the sun and plan... Read More »
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Who first proposed the heliocentric model of the solar system?

The heliocentric model of the solar system was first introduced by Pythagoras around 600 B.C. Aristarchus of Samos gave voice to the concept three centuries later, but it was considered blasphemy u... Read More »
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