Earth and the solar system

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Across
  1. 2. Number of continents
  2. 4. Who created the world
  3. 6. Smallest continent
  4. 7. Hottest planet
  5. 8. Planet closest to the sun
  6. 13. July 1st 1867
  7. 14. Coldest planet
  8. 16. Number of planets
  9. 17. Coldest continent
  10. 18. where we live on
Down
  1. 1. Independence day
  2. 3. planet farther from the sun
  3. 5. Covers 71% of the earth
  4. 6. torus-shaped region
  5. 9. Largest planet
  6. 10. Before continents broke apart
  7. 11. A dwarf planet
  8. 12. Largest continent
  9. 15. Planets orbit around it