Across
- 5. Center of solar system
- 6. First person in space
- 8. Hottest planet
- 9. Only planet unnamed by Roman's
- 12. First person to set foot on Earth's natural satellite
- 14. No longer a planet
- 16. First country to intervene in space
Down
- 1. Closest to the Sun
- 2. Planet named after Roman king of the Gods
- 3. Thing that wholes the solar system together
- 4. Side ways, rings
- 7. Named after Roman God of war
- 10. First animal in space
- 11. Number of planets in Solar System
- 13. Controversial Icy blue planet
- 15. Name of first animal in space