Galaxies

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Across
  1. 1. elongated nucleus with sprial arms
  2. 3. a flattened cloud of billions of stars
  3. 7. no arms
  4. 9. the disk of the galaxy
  5. 10. no obvious nuclear bulge or spiral arms
  6. 11. (Mpc)
  7. 12. our galaxy
  8. 13. very luminous
  9. 14. a system with millions of stars
Down
  1. 2. objects used to map spirals
  2. 4. very little gas
  3. 5. velocity of recession and distance
  4. 6. spherical cloud of stars and star clusters
  5. 8. mass that has no light
  6. 11. large spiral galaxy