Fun Facts all about Astronomy

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Across
  1. 4. an example of a spiral galaxy is:?
  2. 5. This Galaxy fits in no category
  3. 7. an example of a barred spiral is?
  4. 9. A galaxy name is chosen with a number and their _____ :
  5. 10. This galaxy in which the stars and gas clouds are concentrated mainly in a?
  6. 13. Both the Milky Way and the Andromeda galaxy have started to do this?
  7. 15. What's the name of the astronomer who: helped revolutionize the field of astrophysics, and his research helped prove that the universe is expanding? He also had a telescope named after him.
  8. 17. This telescope helped astronomers estimate the age and size of the universe, scientists believe the universe is almost 14 billion years old.
  9. 18. It takes over two hundred million years for the sun to orbit the center of the galaxy. This is called a?
  10. 20. spiral type of spiral is more shaped like an S
  11. 21. This galaxy that has a generally elliptical shape and that has no apparent internal structure or spiral arms
Down
  1. 1. hundred There are _____ billion visible galaxies
  2. 2. This galaxy is the closest to the milky way galaxy
  3. 3. Most galaxies have this at the center of their galaxy.
  4. 6. how many miles is in one light year?
  5. 8. how much of the galaxy is actualy visible?
  6. 11. ESO 162-17 is an example of this type of galaxy related to an irregular galaxy however they are in the act of colliding.
  7. 12. An example of this type of galaxy is closely related to clouds: Magellanic clouds
  8. 14. NGC 4567 and NGC 4568 are examples of this type of galaxy representative of an insect.
  9. 16. The smallest galaxy is?
  10. 19. An example of an elliptical galaxy is: