The speed of a comet in its orbit around the Sun is ______________ when its distance from the Sun is greatest (aphelion).
A) zero
B) reversed
C) greatest
D) least

Question

Quizplus · Accepted Answer

According to Kepler's laws of planetary motion, a comet (or any object in an elliptical orbit) moves fastest when it is closest to the Sun (perihelion) and slowest when it is furthest from the Sun (aphelion).

The Speed of a Comet in Its Orbit Around the Sun