The hitchikers guide

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Across
  1. 5. the creator won a prize
  2. 6. the president
  3. 8. they buzz people
  4. 13. a smart computer
  5. 14. a vechile for space
  6. 15. something that’s in the ear
  7. 18. something you shouldn’t do
  8. 19. a big number but change oto a
  9. 20. the best tool for a hitchhiker
Down
  1. 1. their poetry is quite awful
  2. 2. the answer to life
  3. 3. why earth was destroyed
  4. 4. a mysterious planet
  5. 7. a planet with life
  6. 9. something yellow
  7. 10. intelligent lifeforms
  8. 11. Aurthur ____
  9. 12. something depressing
  10. 16. car brand
  11. 17. intelligence and cheese