How Did Johannes Kepler Refine the Copernican Model of the Solar

question 19

Multiple Choice

How did Johannes Kepler refine the Copernican model of the solar system?

• A) He added epicycles and mini-epicycles to orbits.
• B) He compared it to a clockwork machine.
• C) He hypothesized elliptical orbits for the planets.
• D) He proved that planets orbit at a uniform speed.

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