Across
- 2. vehicle propelled by combustion
- 4. system for finding position
- 5. universe beyond earth's atmosphere
- 6. ways to communicate over long distance
- 7. useful cargo in a spaceship
- 10. descent into earth's atmosphere
- 11. reentry module
- 12. change in velocity
- 16. material used to get rocket to blast off
- 17. door in rocket
- 19. the force that sends a rocket into space
- 20. chemical reaction between two or more
Down
- 1. person who goes into space
- 3. force that holds you to earth
- 8. has to do with moon chaff metallic foil used by
- 9. sending a rocket into the air
- 13. device that controls a rockets flight
- 14. average
- 15. something used to slow down free fall
- 18. count backwards to liftoff