Which of the following statements cannot be supported by Kepler's laws of planetary motion? a The distance of a planet around the sun changes throughout its orbit. b The speed a planet is moving around the sun changes throughout the year. c The orbital period of Mercury can be calculated using the orbital period of Jupiter and the average distances of both planets. d The age of the four largest planets can be determined using the age of the four smallest planets and the average distances of each planet.

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