Planets

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Across
  1. 2. The only planet known to have life on it
  2. 4. Only planet that rotates on its side
  3. 6. Furthest planet away from the sun
  4. 7. The smallest planet in our solar system
Down
  1. 1. The earth's sister planet
  2. 3. Know for its spectacular rings
  3. 5. Biggest planet in the solar system
  4. 7. Known as the red planet