Space Crossword

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Across
  1. 2. The imaginary line on which Earth and the moon rotate
  2. 4. The Earth's natural satellite
  3. 5. A chunk of rock or metal floating through space
  4. 6. A big ball of fire
  5. 7. The study of objects and their supposed effect on Earth
  6. 9. A chunk of rock or metal going through Earth's atmosphere
  7. 11. The shape of Earth's orbit
  8. 12. The shortest day of the year
  9. 15. The longest day of the year
  10. 16. The idea that the solar system revolves around the earth
  11. 18. This person believed that the universe was sun centered
  12. 19. This happens on September 21
  13. 20. The idea that the solar system revolves around the sun
  14. 21. The motion of an object around another object
  15. 22. An object that revolves around a planet
  16. 24. The now called "Dwarf Planet"
Down
  1. 1. The study of the planets
  2. 3. This happens on March 21
  3. 5. A chunk of rock or metal that hit the ground
  4. 8. This person believed that the universe was Earth centered
  5. 10. The point of the planets' orbit closest to the sun
  6. 13. Grouping of stars used for navigation
  7. 14. The planet closest to the sun
  8. 17. Our planet
  9. 21. The movement of Earth on its axis
  10. 23. The point of the planets' orbit farthest from the sun