Cratering
Our solar system bodies exist because of impact cratering and accretion, which grows planets. As we explore the solar system, it has become apparent that most of the surfaces of the rocky planets and moons show evidence of the same sort of intense cratering that we have long seen on our Moon, Mercury, parts of Mars, and on its moons Deimos and Phobos. What do we learn from these observations? When did life on Earth start? What does cratering tell us about other planets? How old are some surface units? What is the nature of surface modification?
1. Cratering Introduction
2. Cratering Provides Deep Clues
3. Craters, Craters Everywhere!
4. What Craters Tell Us
5. Ages, Not Yours, Not Ours, But Craters!
6. Lava Flows on the Moon
7. While We Are on Ages, What Is the Oldest, Youngest?
8. Clues to Surface Changes
9. History of Solar System Debris
10. Space, It’s a Dangerous Neighborhood!
11. Become a Lunar Recruiter for Selene, a Web-based Game
