The Hitch-Hiker's Guide to the Galaxy

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Across
  1. 1. the most useful tool for a hitchhiker
  2. 7. an alien stuck on Earth for 15 years
  3. 8. president of the galaxy
  4. 9. the main character
  5. 11. a depressed robot
  6. 12. translates all languages
Down
  1. 2. a computer designed to find the ultimate question of life
  2. 3. destroyed Earth
  3. 4. smartest beings on Earth
  4. 5. human who left Earth years before its destruction
  5. 6. home to the planet builders
  6. 10. reason the Earth was destroyed