The Planets

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Across
  1. 2. Third planet from the sun
  2. 4. Planet closest to the sun
  3. 6. Where "Martians" live
  4. 7. Cold and icy
  5. 9. Hottest planet
Down
  1. 1. Famous for its rings
  2. 3. Largest planet
  3. 5. Spins on its side
  4. 8. Dwarf planet