Across
- 2. – Powered craft that leaves Earth
- 4. – 1957 Soviet satellite first in orbit
- 7. – Italian who aimed his telescope skyward
- 8. – Crew module that re-enters atmosphere
- 10. – Icy wanderer with a tail
- 12. – Moon-related adjective
Down
- 1. – The universe as an ordered whole
- 3. – Moon-landing U.S. program
- 5. – U.S. agency founded in 1958
- 6. – Wheeled robot on Mars
- 7. – Two-man missions before Apollo
- 9. – Rocky solar-orbiting body
- 11. – Hunter-named NASA capsule