What appears to be the "impact history" of cratering on the Moon?
A) more or less constant bombardment from the earliest times to the present
B) short periods of heavy bombardment alternating with long periods of light bombardment throughout the Moon's life
C) heaviest bombardment when the Moon first formed, gradually decreasing to light bombardment today
D) early period of heavy bombardment, then very light bombardment to the present

Question

Quizplus · Accepted Answer

The Moon experienced an early period of heavy bombardment, known as the Late Heavy Bombardment, approximately 4.1 to 3.8 billion years ago, after which the rate of impacts significantly decreased, leading to a period of very light bombardment that continues to the present day.

What Appears to Be the "Impact History" of Cratering on the Moon