When Copernicus First Created His Sun- Centered Model of the Universe

question 103

Multiple Choice

When Copernicus first created his Sun- centered model of the universe, it did not lead to substantially better predictions of planetary positions than the Ptolemaic model. Why not?

• A)Copernicus used perfect circles for the orbits of the planets.
• B)Copernicus misjudged the distances between the planets.
• C)Copernicus placed the Sun at the center, but did not realize that the Moon orbits the Earth.
• D)Copernicus placed the planets in the wrong order going outward from the Sun.

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