Compared to planets close to the sun, and based upon Kepler's third law of planetary motion, the length of the year of planets farther out from the sun are
A) the same
B) less
C) larger
D) more information is necessary.

Question

Quizplus · Accepted Answer

Kepler's third law of planetary motion states that the square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit. This means that planets farther from the Sun have longer orbital paths and slower orbital speeds, resulting in longer years.

Compared to Planets Close to the Sun, and Based Upon