Across
- 7. constellation
- 11. gravity
- 13. astronaut
- 14. mars
- 15. eclipse
- 16. earth
- 17. armstrong
- 18. mercury
- 20. crew
Down
- 1. lightyear
- 2. redgiant
- 3. shootingstar
- 4. hubble
- 5. milkyway
- 6. universe
- 8. gagarin
- 9. satellite
- 10. spacecraft
- 12. laika
- 19. crater