Primary Planets & Their Moons

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Across
  1. 3. Most volcanically active object in the Solar System
  2. 5. Largest moon in the Solar System
  3. 8. Largest of the ice planets
  4. 9. Innermost terrestrial planet
  5. 10. Has very active jets of water ice erupting from its south pole
  6. 12. Only moon with a substantial atmosphere
Down
  1. 1. King of the planets
  2. 2. Hottest planet in the Solar System
  3. 4. Second largest and least dense planet in the Solar System
  4. 6. Smoothest moon in the Solar System due to its active ice crust.
  5. 7. Largest terrestrial planet
  6. 9. Closest planet to the Earth
  7. 11. Furthest planet from the Sun