Across
- 3. = Our star
- 5. = US space agency
- 6. = International Space Station abbr.
- 7. = Icy solar system traveler
- 9. = Unmanned explorer
- 10. = Second planet from the sun
- 12. = Related to the sun
- 13. = Path around a planet
- 16. = Launch vehicle
- 19. = Famous space telescope
- 21. = Ringed planet
- 22. = Rocky space body
- 24. = Earth's natural satellite
- 25. = Massive star system
Down
- 1. = Largest planet
- 2. = The final frontier
- 4. = The Red Planet
- 8. = Star-forming cloud
- 11. = Astronaut team
- 12. = Shining ball of gas
- 14. = The farthest planet in the solar system
- 15. = Dwarf planet
- 17. = The universe
- 18. = Related to the moon
- 20. = Our home planet
- 23. = Spacewalk abbr.