The Greatest Inaccuracy in Copernicus's Theory of the Solar System

question 16

Multiple Choice

The greatest inaccuracy in Copernicus's theory of the solar system was

• A) no allowance for retrograde motion.
• B) placement of the planets on epicycles, the centers of which followed orbits around the Sun.
• C) the assumption that the planets move in elliptical orbits with constant speeds rather than variable speeds.
• D) placement of the planets in circular orbits.

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