Our Universe Lessons 1-8 Vocab Crossword

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Across
  1. 3. study of things found outside of the earth
  2. 4. the sun is at the center of this model
  3. 8. movement of a body around its axis
  4. 10. a group of stars with a recognizable pattern
  5. 11. force that holds moons,planets and comets in orbit
  6. 14. first day of spring or autumn
  7. 15. a gas and dust cloud in space
  8. 17. idea that the universe suddenly came into existence 14 billion years ago
  9. 19. a region in the sky, which contains stars
Down
  1. 1. large pieces of rock that orbit the sun
  2. 2. Ceres, Pella and Vesta are found here
  3. 5. earth is at the center of this model
  4. 6. everything pulls on everything else, it's the law!
  5. 7. first day of summer or winter
  6. 9. movement of one heavenly body around another
  7. 12. a very bright star explosion
  8. 13. distance that light travels in one year
  9. 16. our galaxy
  10. 18. temporary flare-up in brightness of a star