Planetary puzzler

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Across
  1. 3. tilted on its axis
  2. 7. The "Blue Planet"
  3. 8. The Great Red Spot
  4. 9. lots of rings
Down
  1. 1. Hottest planet
  2. 2. The Red Planet
  3. 4. The Great Dark Spot
  4. 5. No longer a planet
  5. 6. lots of craters
  6. 9. Center of the solar system