Across
- 2. an object that orbits a planet
- 7. I--? SS
- 8. a false limb
- 11. a condition of weightlessness
- 13. map of mars released by NASA
- 15. name of dog on Sputnik 2
- 16. year of first man on moon
Down
- 1. Thermometer for monitoring health.
- 3. sent first images of earth
- 4. name of first mars rover
- 5. completed first ever orbit of mercury in 2009
- 6. the forces at take off
- 9. Global -----? system
- 10. name of comet visited by nasa in 2006
- 12. spacecraft used by Neil Armstrong
- 14. year of first unmanned landing on moon
- 16. year sputnik 1 is launched