Daily Puzzle No. 381

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Across
  1. 5. The most horrid thing that a Vogon can utter
  2. 7. Where Arthur and Trillian are from
  3. 9. Human whose planet was destroyed by Vogons
  4. 10. Controllers of the planet Earth
Down
  1. 1. The "answer to life and the universe"
  2. 2. Name of the man who warned Arthur of the Earth's destruction
  3. 3. Last name of the Galactic President
  4. 4. Ancient planet previously used to create planets
  5. 6. Considered to be the best supercomputer in the universe, created by Deep Thought
  6. 8. Zaphod Beetlebrox's female companion