They have wings

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Across
  1. 2. force that goes backward
  2. 3. last name of person in charge of blue origin
  3. 5. force that goes down
  4. 7. last name of pop star that just went to space
  5. 9. last name of person that created laws of motion
  6. 12. last name of first person in space
  7. 13. how wind affects an object
  8. 14. force that goes forward
  9. 15. last name of first person on the moon
Down
  1. 1. device that scoops air and provides thrust
  2. 4. last name of person that said we'd get to the moon
  3. 6. last name of the oldest person to go into space
  4. 8. last name of the fastest man
  5. 10. last name of brothers that invented propeller
  6. 11. force that goes up
  7. 16. last name of person that is in charge of space x