Planets Do Not Move in Precise Ellipses, as Had Been

question 25

Multiple Choice

Planets do not move in precise ellipses, as had been thought by Kepler, because of

• A) dust grains and other material that disturbs the orbits.
• B) influences due to the other planets.
• C) Both of the above.
• D) Nonsense-- the planets actually do move in precise ellipses.

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