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