Universe puzzles

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Across
  1. 2. Ice giant closed to the sun
  2. 4. Earth's only natural satellite
  3. 6. Smallest and closest planet to the sun
  4. 8. Only planet with rings
  5. 9. Most distant planet from the sun
Down
  1. 1. Largest planet in the solar system
  2. 3. Rocky planet with a dense atmosphere
  3. 4. Nicknamed "The Red Planet"
  4. 5. Star at the center of the solar system
  5. 7. Planet we live on