Space

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Across
  1. 4. Celestial revolvers
  2. 6. It's checked before taking off
  3. 7. Cycle tire
  4. 9. __ belt
  5. 13. Thousands squared
  6. 15. In the boonies
  7. 16. Like van Gogh's night
  8. 17. It's the limit, so they say
Down
  1. 1. Focal point
  2. 2. Star
  3. 3. In a klutzy way
  4. 5. Swivelling
  5. 8. Weather whirler
  6. 10. Cosmos
  7. 11. "The Hitchhiker's Guide to the ___"
  8. 12. Dalmatian markings
  9. 14. School vacation time