Vocabolario

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Across
  1. 4. spaceship
  2. 8. science-fiction
  3. 10. engine
  4. 11. theory
  5. 13. hyper-fast
  6. 15. fuel
Down
  1. 1. hole
  2. 2. fate
  3. 3. spacecraft
  4. 5. light years
  5. 6. shortcut
  6. 7. speed
  7. 9. hypothesis
  8. 12. balloon
  9. 14. century