Astronomy Crossword Puzzle

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Across
  1. 3. To travel around
  2. 4. The Earth is tilted toward the sun during the _______
  3. 6. This planet is sometimes called "the red planet"
  4. 8. This instrument breaks up incoming starlight into a spectrum of color
  5. 9. This word means moon
  6. 12. _______ fusion is the energy producing reaction that occurs in the sun creating the released heat and light
  7. 16. We live on this planet
  8. 17. This planet is pale blue and has high winds
  9. 19. The number of times light can go around the earth in one second
  10. 20. The study of outer space
  11. 23. This star is small, but dense
  12. 24. This planet could float if it was in water
  13. 25. All matter has this force
Down
  1. 1. This is the largest planet
  2. 2. To turn
  3. 5. This planet is the closest to the sun
  4. 7. You should NEVER look at this type of eclipse
  5. 10. This planet rotates sideways
  6. 11. A cluster of stars that make up a large group
  7. 13. These have a solid core surrounded by ice
  8. 14. This planet's day is longer than its year
  9. 15. _______'s law says that nearby galaxies are moving away from us slowly
  10. 18. A type of oval that is the shape of all planets's orbit
  11. 21. The _________ universe theory says that the universe will continue to expand forever
  12. 22. Reflected sunlight