Across
- 3. smaller in size, but hotter than larger stars
- 6. larger stars that tend to be cooler
- 7. a sphere that gives off heat and light
- 8. this color is the hottest
- 10. "true" brightness
- 11. how bright a star appears from Earth
- 13. largest types of stars
Down
- 1. this is the color of the sun
- 2. 90% of stars
- 4. a diagram that compares luminosity and temperature
- 5. amount of light energy
- 9. this color is the coldest
- 12. a group of stars