Across
- 3. Ringed planet
- 7. Closest planet to the Sun
- 8. Organization which explores space
- 11. Shadow of object on another object
- 12. Big Dipper
- 14. A force which attracts objects
- 17. Distance traveled by light in one year
- 20. International Space Station
- 21. International Space Station
Down
- 1. Closest planet to Earth
- 2. Orbits a star
- 3. Large glowing ball of hot gases
- 4. Dirty iceballs
- 5. Largest planet in Solar system
- 6. An object which orbits a planet
- 9. Saturn's largest moon
- 10. Coldesf planet in solar system
- 13. Galaxy where the Sun is located
- 15. North Star seen from Earth
- 16. Path of an object circling another object
- 18. A cluster of stars held together by gravity
- 19. Instrument used to see distant objects