Why is Newton's version of Kepler's third law so useful to astronomers?
A)It allows us to calculate distances to distant objects.
B)It can be used to determine the masses of many distant objects.
C)It tells us that more-distant planets orbit the Sun more slowly.
D)It explains why objects spin faster when they shrink in size.

Question

Quizplus · Accepted Answer

Newton's version of Kepler's third law states that the masses of objects can be determined based on their orbital periods and distances. This is extremely useful to astronomers for determining the masses of distant objects such as planets, stars, and galaxies.

Why Is Newton's Version of Kepler's Third Law So Useful