Outer Planets

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Across
  1. 4. The ice giant that rotates on its side
  2. 6. Clouds with a temperature of 150 Kelvin
  3. 7. The coldest and windiest planet in our solar system
Down
  1. 1. Gas giants
  2. 2. The least dense planet in the solar system
  3. 3. A core in the center of all outer planets made of liquid heavy metal
  4. 5. The largest planet in the solar system