The Most Significant Difference Between the Astronomical Theories of Ptolemy

question 53

Multiple Choice

The most significant difference between the astronomical theories of Ptolemy and Copernicus is

• A) Ptolemy uses circular planetary orbits while Copernicus uses elliptical orbits.
• B) Ptolemy's theory does away with many of the complexities of the Copernican theory.
• C) Ptolemy's theory is Earth- centered, whereas Copernicus's is sun- centered.
• D) Ptolemy's is not based on scientific evidence, while Copernicus's is.
• E) Ptolemy's theory is sun- centered, whereas Copernicus's is Earth- centered.

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