Vocabulary

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Across
  1. 3. something nothing can get out of
  2. 7. a theory of how the universe started
  3. 8. 10 billon light years old
  4. 10. very small galaxy
  5. 11. does not have a regular shape compared to different galaxies
  6. 12. a explosion of a star
  7. 14. a dead star
  8. 15. when giant star dies
Down
  1. 1. a energy that affects our universe
  2. 2. study of the universe
  3. 4. our galaxy
  4. 5. with stars, gas, dust, and dark matter
  5. 6. something the sun will turn to in time
  6. 9. stars that orbit each other
  7. 13. we see a lot of them at night