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Geography, 25.02.2020 05:27 emfastback8868
Process of Science: Explaining the Motions of Planets. To ancient astronomers, the motions of the Sun, the Moon, and the stars seemed fairly simple. However, the motions of the planets, which were more complicated, were harder to account for. It was a challenge for astronomers to explain the observed motions of the planets and to relate those motions to variations in planetary brightness. Part A- Two competing models attempt to explain the motions and changing brightness of the planets: Ptolemy's geocentric model and Copernicus' heliocentric model. Sort the characteristics according to whether they are part of the geocentric model, the heliocentric model, or both solar system models.
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Process of Science: Explaining the Motions of Planets. To ancient astronomers, the motions of the Su...
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