"Moon's craters give new clues to early solar system bombardment"

Information from the article, “Moon’s craters give new clues to early solar system bombardment” shows that craters can tell us about the history of our solar system. More than 5,000 craters have been identified on the Moon by a research team led by Brown University.  This proves the theory of a planetary bombardment more than 4 billion years ago, when comets, asteroids, and other space matters bombarded the Moon and other bodies in the solar system. Scientists have also determined that the Moon’s oldest regions are the southern near side and the north-central far side. A group led by the University of Arizona hypothesized that the ratio of objects hitting the moon is different from the ratio when the Moon was first formed. They later discovered the older surfaces of the Moon had craters suggesting a greater ratio of larger projectiles. The scientists determined that the projectiles are getting smaller. Ultimately, the article proves that craters can tell us about the history of our solar system.

http://news.brown.edu/pressreleases/2010/09/moon