Across
- 2. Those who maintain,build and design the spacecraft
- 4. Soviet Cosmonaut and first person to walk in space
- 6. The first artificial satellite that orbited the earth launched by the USSR
- 7. A program that had proved sending two people to space at a time was possible
- 9. Lead Americas space program
- 10. Dog that was on Sputnik 2
Down
- 1. The science of travel through the air
- 3. A communication system in space able to receive signals from Earth
- 5. Soviet Cosmonaut and the first man in space
- 8. US Spaceflight project designed to put humans in orbit