Quiz

1. What do halo stars tell us about our galaxy's history?
2. How did our galaxy form?
3. What lies in the center of our galaxy?
4. What are the three major types of galaxies?
5. How are galaxies grouped together?
6. How do we measure the distances to galaxies?
7. What is Hubble's law?
8. How do distance measurements tell us the age of the universe?
9. Name a galaxy nearby.
10. What is the mass of the black hole in the center of the galaxy?