Across
- 3. NASA's program for space travel
- 8. First artificial satellite launched
- 10. First living creature in orbit
- 11. Space launch vehicle
- 13. First human in space
- 14. Series of US scientific satellites
- 15. Outer space astronaut activity
- 17. NASA's moon-landing program
- 19. Rocket used by NASA for space missions
Down
- 1. Competition between US and USSR
- 2. Soviet human spaceflight series
- 4. Soviet Mars probe
- 5. Moon-exploring spacecraft
- 6. NASA's first human spaceflight program
- 7. Soviet spacecraft for lunar exploration
- 9. first American to orbit the Earth
- 12. Early US satellite program
- 15. Famous Russian spacecraft
- 16. Soviet astronaut
- 18. Apollo spacecraft part