outer planets

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Across
  1. 2. 8th
  2. 5. 5th
  3. 6. These white clouds consist of frozen ammonia crystals
  4. 8. 6th
  5. 9. clouds on top of other clouds like in a layered wedding cake
  6. 10. a major planet whose orbit is outside the asteroid belt (Jupiter, Saturn, Uranus, Neptune, Pluto)
Down
  1. 1. all of them have numerous moons, as well as planetary rings made of dust and other particles.
  2. 3. the only planet to be named after a Greek god rather than a Roman one.
  3. 4. 7th
  4. 7. gas giants