Galaxies

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Across
  1. 2. -how many stars are in the universe?
  2. 4. -French astronomer who identified some of the first galaxies to be seen.
  3. 7. -One hundred thousand million stars are in the?
  4. 9. -A galaxy that does not have distinct regular shape.
  5. 10. what happens when a galaxy dies?
  6. 11. -elliptical galaxy
  7. 14. - telescope that has helped astronomers discover more information on galaxies, and help scientists know how galaxies and planets are formed.
  8. 15. a spiral galaxy with a central bar shaped structure that contains stars.
  9. 16. -a galaxy with a smooth shape, looking featureless.
  10. 19. irregular galaxy
  11. 20. flat rotating disk that contains stars, gas, and dust, and a central concentration of stars.
Down
  1. 1. how old is the milky way?
  2. 3. -barred spiral galaxy
  3. 5. the closest galaxy to the milky way
  4. 6. American astronomer who proved that objects in the sky were to be clouds of dust and gas.
  5. 8. Most galaxies have this at the center of them.
  6. 12. what percentage of the galaxy is seen with the naked eye?
  7. 13. -spiral galaxy
  8. 17. –galaxies whose gravitational fields result in a disturbance of one another.
  9. 18. - what is the main thing galaxies are named after?