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