Across
- 5. Rotates on its side
- 6. Hottest planet
- 7. Once a planet but now a dwarf planet
- 8. Icy rock that orbits the sun
- 10. Planet with well known ring system
- 12. Name of our galaxy
- 13. Liquid substance found on Earth
- 14. Something that revolves around a planet
- 16. Coldest planet
- 18. Path a planet follows around the sun
- 19. Revolves around the Earth
- 20. Name for outer four planets
Down
- 1. One of the gases that makes up the sun
- 2. Planet that sustains life
- 3. Where asteroids are found
- 4. Largest planet in our solar system
- 9. Planet has a lot of rust
- 11. Large pieces of rocks in space with irregular shape
- 12. Smallest planet
- 15. Known as a shooting star
- 17. One of Mars' moon