Across
- 5. The lightest planet with rings around it.
- 8. It takes 28 days to go around the Earth.
- 9. Just under the crust, but not the center of the Earth.
- 10. The most beautiful planet in the solar system.
- 11. The coldest planet in the solar system.
- 12. The outside of Earth.
Down
- 1. Is not a planet, but a star.
- 2. The biggest planet in the solar system.
- 3. Is not a planet, but a dwarf planet.
- 4. The farthest planet from the sun.
- 6. The center of the Earth.
- 7. The hottest planet in the solar system.
- 8. The planet with the highest mountain in the solar system.
- 9. The closest planet to the Sun.