space crossword

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Across
  1. 5. doctor
  2. 6. an unpleasant emotion
  3. 7. alien
  4. 11. an envelope of gas surrounding the earth
  5. 12. extravehicular activity
  6. 13. astronaut out of space protection
  7. 14. a gravitational field so intense that no matter or radiation can escape
  8. 17. blood going to the upper part of your body
  9. 19. an act of launching something
  10. 20. chemical element with symbols
Down
  1. 1. a US space laboratory
  2. 2. an illusion of incredible speed
  3. 3. a special kind of tablet that gives vitamins and calcium
  4. 4. commonly defined as the totality of existence
  5. 8. where trash goes
  6. 9. brightening observe over he sun surface
  7. 10. tooth pain
  8. 15. hard upper torso
  9. 16. an important assignment
  10. 18. a force that attracts you the earth