Across
- 2. planet with life
- 4. Biggest moon
- 5. smallest moon
- 8. ball of light and gas in space
- 12. Earth's moon
- 13. biggest planet
- 14. hottest planet
- 15. a star that the solar system revolves around
Down
- 1. sideways planet
- 3. coldest planet
- 6. closest planet to the sun
- 7. ninth planet
- 9. Moon with an atmosphere that may contain life
- 10. ringed planet
- 11. red planet