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