Across
- 2. – Soviet lunar probe
- 5. – Health insurance program, post-polio
- 6. – Radar technology for TV
- 9. – First human in space
- 10. – Triggered the space race
- 11. – Rocket stage for lift-off
- 13. – First communication satellite
- 14. – Early telecommunication code
Down
- 1. – State of matter in space research
- 3. – Body’s response to vaccine
- 4. – Technology used in early TV tubes
- 7. – Type of cable used in TVs
- 8. – U.S. early space exploration program
- 12. – Key military technology in the 50s
- 14. – Early U.S. planetary mission