PLANETS!!

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Across
  1. 2. closest planet to the Sun
  2. 4. not officially a planet anymore
  3. 6. farthest planet from the Sun
  4. 8. famous for its rings
  5. 9. known as the red planet
Down
  1. 1. biggest planet
  2. 3. takes 365 days to go around the Sun
  3. 5. hottest planet
  4. 7. coldest planet