Space Crossword

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Across
  1. 3. Coldest planet?
  2. 4. What is the dwarf planet called?
  3. 8. What planet has rings?
  4. 9. Biggest planet?
Down
  1. 1. Hottest planet?
  2. 2. What do you use to travel to the moon?
  3. 5. What instrument is used to look into the sky?
  4. 6. What planet do we live on?
  5. 7. What planet is closest to the sun?