Astr 201 Nov 16, 1999 

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• Minor planets

• Composition

• Origins

• Meteorite orbits

• Kirkwood gaps and orbital periods

• Diagram of asteroid radial distribution

• Saturn's rings

• Ongoing collisions in asteroid belt

• Meteors and meteor showers

• Dinosaur extinction

• Leonids and communication satellites

• Types of meteorite

• Differentiation and meteors

• Age-dating meteorites

• Radioactive decay

• Formation of radioactive elements

• Use of radioactive by-products for age dating

• How old are the meteorites?

• Interplanetary dust