Across
- 5. mercury Venus earth mars
- 6. earth’s twin
- 8. closest planet to the sun
- 9. what separates the inner and outer planets
Down
- 1. Jupiter Saturn Uranus Neptune
- 2. what separates the outer and dwarf planets
- 3. What all planets orbit
- 4. a planet with no surface
- 7. the third planet from the sun
- 8. the fourth planet from the sun