Across
- 3. a place in space where gravity pulls so much that even light can not get out
- 5. velocity of recession and distance
- 8. mass that has no light
- 12. very luminous
- 13. very little gas
- 14. large spiral galaxy
Down
- 1. the disk of the galaxy
- 2. spherical cloud of stars and star clusters
- 4. no arms
- 6. elongated nucleus with sprial arms
- 7. a flattened cloud of billions of stars
- 9. objects used to map spirals
- 10. no obvious nuclear bulge or spiral arms
- 11. a system with millions of stars
- 12. our galaxy
- 14. (Mpc)