Quiz

1. How do we measure stellar masses?
2. What are giants, supergiants, and white dwarfs?
3. What are the two types of star clusters?
4. How do we measure the age of a star cluster?
5. Do we know any star cluster 14 billion years old, or older?
6. Which star has a longer life, small mass star, or big mass star?
7. Which star is hotter, small mass star, or big mass star?
8. Which star is bluer, small mass star, or big mass star?
9. Which star is closer, the Sun, or Proxima Centaurus?
10. What is the age of the Universe?