Read Chapter 13-14 from Discovering Astronomy.
WebAssign -- Chapter 13-14. Answer homework questions covering Chapter 13-14.
Almost everything we know about the universe has been learned by studying light.
As a result, it's essential for you to understand how we use light to know:
- the composition of stars (what stars are made of)
- the temperature of stars (how hot stars are)
- motion of stars (how fast and in what direction stars are moving)