Across
- 5. orbital velocity versus radius
- 7. mass that is invisable
- 9. are rich in metal
Down
- 1. what astronomers use to say both the halo and central bulge
- 2. contains most of the stars, gasses, and dust
- 3. flattened cloud of billions of stars
- 4. forms from gravity
- 6. spherical cloud of stars and star clusters
- 8. about 3300 light years