Across
- 4. Someone who travels into space
- 6. Giant large planets without any solid metals or rocks
- 8. Inner planets closest to the sun
- 11. Something that orbits around the Sun
- 12. a rock (small or large) orbiting the sun
- 13. Closest planet to the sun
Down
- 1. Red planet
- 2. Second largest terrestrial planet
- 3. Only planet that contains water
- 5. a instrument to use to see planets
- 7. A galaxy that contains our solar system
- 9. Largest planet
- 10. Second largest planet
- 13. Only natural satellite for Earth