

After reading, studying, and discussing Chapter 15, you should be able to:
- Describe the geocentric theory of the universe held by many early Greeks.
- List the contributions to modern astronomy of Nicolaus Copernicus, Tycho Brahe, Johannes Kepler, Galileo Galilei, and Sir Isaac Newton.
- Describe the general characteristics of the two groups of planets in the solar system.
- Discuss the origin of the solar system.
- Describe the major features of the lunar surface.
- List the distinguishing features of each planet in the solar system.
- List and describe the minor members of the solar system.