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Across
  1. 2. is the only planet with rings in the solar system
  2. 5. is the longest revolution around the sun
  3. 7. is the coldest planet in the solar system
  4. 8. is the only planet with rovers
Down
  1. 1. the biggest planet in the solar system
  2. 3. is the only planet with life in the solar system
  3. 4. is the hottest planet in the solar system
  4. 6. is the only dwarf planet to be in the solar system
  5. 8. is the smallest and the closest planet to the sun