Space Crossword

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Across
  1. 3. the feats of an acrobat
  2. 6. pertaining to the mind
  3. 12. the return from outer space into the earth's atmosphere
  4. 13. portable life-support system
  5. 14. pay no attention
  6. 17. extravehicular mobility unit
  7. 18. the state of being contaminated.
  8. 19. Simplified aid for EVA rescue
  9. 20. trash airlock
Down
  1. 1. force of gravity
  2. 2. a line attaching the Skylab to a spacecraft
  3. 4. oxygen occurring as a single atom
  4. 5. restraint rope
  5. 7. able to supply its own needs without external assistance
  6. 8. calcium lose
  7. 9. confined to bed because of illness
  8. 10. tablets
  9. 11. unintentional
  10. 15. geosynchronous Earth orbit
  11. 16. pertaining to the heart