Unit 7: Galaxies and Motion

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Across
  1. 3. Held together by mutual gravitational pulls
  2. 4. Something that can be used to determine a star's distance
  3. 5. Galaxy type that is smooth
  4. 7. Galaxy that has a bar in its bulge
  5. 10. relation between recessional velocity and distance
  6. 11. Gravitationally bound stars
  7. 12. Small galaxy clusters
  8. 13. Galaxy type with a flat star forming disk
  9. 14. Where cluster and old stars tend to reside
Down
  1. 1. Disk A flattened region of gas and dust
  2. 2. Not fitting in other standard galaxy classifications
  3. 3. The center section of a galaxy
  4. 6. Claims velocity of recession of a galaxy is proportional to its distance
  5. 8. Type of galaxy that emits energy as long-wavelength radiation
  6. 9. Shift of an object cause by hubble flow