题目选项分析

Kepler's Third Law expresses the relationship between the semi-major axis of a planet's orbit and its orbital period: the further a planet's orbit is from the Sun, thereby the planet's period of revolution around the Sun is that much longer

Kepler's Third Law expresses the relationship between the semi-major axis of a planet's orbit and its orbital period: the further a planet's orbit is from the Sun, the longer the planet's period of revolution around the Sun