Which of the following planets exhibit the characteristic "back and forth" motion relative to the stars?
D) All of the above
Kepler's laws of planetary motion are a set of three laws that predict how planets move around the sun. Kepler's laws improved upon the existing Copernican model of planetary motion, replacing the circular motion of planets with that of a more accurate elliptical version.
Answer and Explanation:
The answer is (d) all of the above.
We can consider the revolution of each planet around the sun as a "back and forth" motion relative to the sun. All the planets in the solar system are subject to Kepler's laws of planetary motion in this manner. In particular, all planets exhibit the characteristic motion due to Kepler's first law: that the orbit of a planet is elliptical with the sun being one of the two foci.
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from Basics of AstronomyChapter 22 / Lesson 12