The Solar Sytem

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Across
  1. 2. The planet known as the "red planet".
  2. 4. The last planet in the solar system.
  3. 6. The only planet humans can survive on.
  4. 7. The hottest and brightest planet in the solar system.
Down
  1. 1. The planet known as the "ice giant".
  2. 3. The smallest planet in the solar system.
  3. 5. The largest planet in the solar system.
  4. 8. The planet that has a ring around it.