Space

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Across
  1. 4. a vehicle designed for space flight
  2. 5. a chemical mixture that is burned to produce thrust
  3. 8. the science of getting ships, aircraft, or spacecraft from place to place
  4. 12. weightlessness
  5. 13. in the us, a person who rides a space vehicle
  6. 14. a state of very weak gravity
  7. 17. a state of very weak gravity
Down
  1. 1. a vehicle designed for space flight
  2. 2. the part of the universe lying outside the limits of the earth's atmosphere
  3. 3. a vehicle capable of sustaining a person above the terrestrial atmosphere
  4. 6. a vehicle, missile, or aircraft which obtains thrust by the reaction to the ejection of fast-moving exhaust from within a rocket engine
  5. 7. is the arrangement of the natural and artificial physical features of an area
  6. 9. the path of an object moving through space
  7. 10. the mechanical coupling of two or more human-made objects
  8. 11. a path described by one body in its revolution about another
  9. 15. a vehicle for driving over rough terrain
  10. 16. a vector quantity that includes the speed and direction of an object