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.
Answer:B
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.