Solar System

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Across
  1. 1. the largest planet
  2. 3. dwarf planet
  3. 5. the attraction that pulls objects together
  4. 8. when shadows are the shortest
  5. 10. Earth's sister planet that is covered in toxic gases
  6. 12. sun sets in this direction
  7. 13. the spinning of an object on it's axis
  8. 15. the changes in appearance of the moon's shape
Down
  1. 2. the movement of one object around another
  2. 4. known as the red planet
  3. 6. caused by the tilt of the axis
  4. 7. the only star in our solar system
  5. 9. path an object follows as it revolves around an object
  6. 11. planet known for it's rings of ice and dust
  7. 14. imaginary line that runs through the earth