Across
- 4. closest planet to the sun
- 5. large spherical object that orbits a star
- 9. planet that orbits on its axis
- 10. large desert of dust
- 11. object that orbits a planet
- 13. burning ball of gas
Down
- 1. hole large dense vacuum
- 2. farthest planet from the sun
- 3. hottest planet
- 6. ecosystem of stars
- 7. largest planet in our solar system
- 8. giant planet with no surface
- 12. only inhabitable planet