Planets

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Across
  1. 6. the coldest planet on solar system
  2. 7. known for its rings
  3. 8. known to harbor life
  4. 9. closest planet to the sun
Down
  1. 1. hotter than mercury
  2. 2. the most distant planet
  3. 3. no longer a planet
  4. 4. known as the "red planet"
  5. 5. the largest planet in the solar system