astronomy

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Across
  1. 1. theory the universe will come back together again and have repeating big bangs
  2. 2. this size star is 1000x the diameter of the sun
  3. 5. a unit of measurement that represents the average distance from the Earth to the sun
  4. 7. color of hottest star
  5. 9. this type of galaxy doesn't have a set shape
  6. 11. this star has a diameter of about 10 miles
  7. 12. 96-99% of a stars mass
  8. 13. this type of galaxy has a bulge in the middle and arms
  9. 14. color of coolest star
  10. 15. how much light the star actually gives off
  11. 17. giant cloud of dust and gas
  12. 18. theory that universe will continue racing outward until everything dies
  13. 20. this type of galaxy has no dust or gas
Down
  1. 1. energy is spread evenly throughout universe, this is evidence of the big bang theory
  2. 3. colors of the visible spectrum
  3. 4. the theory on how the universe began
  4. 6. light waves that show a shift and serve as evidence that the universe is expanding
  5. 8. year a unit of measurement used outside of the solar system
  6. 10. how much light the star appears to give off
  7. 16. what about the universe is repeated over and over?
  8. 19. name of the galaxy we live in