Across
- 4. determends when we sleep.
- 6. the coldest planet.
- 8. the ring planet.
- 10. this takes one year.
- 12. the smallest planet.
Down
- 1. spins on it's side.
- 2. a giant star.
- 3. when the sea rises and falls 2 times a day.
- 5. the Earth has one of these.
- 7. the biggest planet.
- 9. about the Earth's size.
- 11. the second planet in the solar system.
- 13. the only planet with life.