Across
- 2. vehicle
- 6. engineers
- 7. space
- 9. imagine
- 11. platform
- 13. moon
- 14. unknown
- 16. chimpanzee
- 18. satellite
- 19. astronauts
- 20. program
Down
- 1. pilots
- 3. explode
- 4. mission
- 5. enthusiastic
- 8. replace
- 10. experiments
- 12. orbit
- 15. communicator
- 17. rockets