My baby's crossword

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Across
  1. 5. Daddy lifts me to his?
  2. 8. Coal got a new one of these
  3. 9. The big button that makes my rocket ship stop is what colour?
  4. 11. There 100, Teen, million or billion stars in the milky way?
  5. 12. Which is the only planet not named after a god?
  6. 14. A very friendly little Robot
  7. 16. My one is the brightest in the sky
  8. 17. Which is the smallest planet?
  9. 19. We ride in one on our space adventures
  10. 20. Daddy's cat
  11. 21. Some of my best adventures are here
Down
  1. 1. Milky way is also a ?
  2. 2. My only charlie bear who's name doesn't start with "M".
  3. 3. Daddy climbed a really really long one of these
  4. 4. Star's best friend on earth
  5. 5. Do we weigh more or less in space?
  6. 6. Among other things Daddy thinks I'm really?
  7. 7. My newest stuffy friend
  8. 10. How many moons does earth have?
  9. 13. The biggest planet
  10. 15. Daddy and me watched earth fireworks from here
  11. 18. I am my Daddy's little space ?
  12. 22. My moon boots are what colour?