galaxy vocab

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Across
  1. 2. has a nucleus of bright stars and two or more arms.
  2. 4. fastest speed
  3. 7. a collection of stars,gases,dust and planets.
  4. 8. shift in light tward the red
  5. 10. existing matter+space considered as a whole
  6. 12. curved mirrors that reflect light and form an image
Down
  1. 1. has many different shapes and are smaller than most galxies.
  2. 3. our galaxy
  3. 5. theroy that the universe exanded from a hot dense.
  4. 6. a device that measures the spectrum of light.
  5. 9. when planets and moons revolve around a star.
  6. 11. telescope that uses a glass lens to collect light