Per Ardua Ad Astra

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Across
  1. 4. The holes in a certain bubbly chocolate bar?
  2. 6. Storm that really won Battle of Britain
  3. 7. This shaggy horned bovine isn’t found in North America
  4. 14. CFL quarterback, commentator and coach Don ___
  5. 15. Ivy League trainer?
  6. 17. Snoopy’s aviator foe
  7. 18. Night light of the dawn goddess
  8. 19. This doll comes with pins
Down
  1. 1. Beware, dragons do this
  2. 2. WWII ace and famous speedster
  3. 3. Virile feline (Jerry’s nemesis?)
  4. 5. Billy wasn’t a cardinal or pope
  5. 8. Did he do bicep curls before his lunar adventure?
  6. 9. He gave Napoleon the boot?
  7. 10. Royalty with rod and reel?
  8. 11. Carrying troops was not one of this demigod’s jobs
  9. 12. Trendy neckwear for old mariners
  10. 13. Night hunter with a starry belt
  11. 16. Biplane for a desert caravan