Across
- 4. Second farthest planet from the Sun
- 5. Only Moon that rotates backwards
- 8. Closest star to Earth
- 9. The largest planet
- 11. Takes approximately 365 days to rotate around the Sun
- 12. Closest planet to the Sun
Down
- 1. Known as the "Red Planet"
- 2. A space rock
- 3. Closest planet to Earth
- 6. No longer officially considered a planet
- 7. Coldest planet in the Solar System
- 10. Famous for its rings