A. Answer the following questions. 1. List five characteristics used to classify stars. 2. What dies a start's color reveal? 3. What are the very large starts called? 4. What is the size of the sun? 5. What does the stars brightness depend on? 6. Define parallax 7. Of what color are cooler stars? 8. What cooler are the hottest stars? 9. Define black holes 10. What do you call the patterns in the sky?​