The Solar System

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Across
  1. 3. 14 moons and 5 main rings
  2. 4. Rocky and Rusty Planet
  3. 7. Ice giant
  4. 8. Biggest planet
Down
  1. 1. Smallest planet in the solar system
  2. 2. First planet explored by space craft
  3. 5. 6th planet from our sun
  4. 6. Has a population of 8 billion people