The Solar System

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Across
  1. 3. Earth's "sister"
  2. 7. This planet spins sideways
  3. 8. This planet has huge, visible rings
  4. 9. "The Red Planet"
Down
  1. 1. The farthest planet in the Solar System
  2. 2. The smallest planet
  3. 4. The Center of the Solar System
  4. 5. The only planet known to support life
  5. 6. The largest planet