The Planets

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Across
  1. 3. what planet in the solar system is farthest from the sun?
  2. 4. What planet is nicknamed 'Red Planet'?
  3. 7. the chemical element uranium was named after what planet?
  4. 8. is the largest planet in the Solar System?
Down
  1. 1. what is the smallest planet in the Solar System?
  2. 2. what is the hottest planet in the Solar System?
  3. 5. the sixth planet from the sun features an extensive ring system?
  4. 6. what is the third planet from the sun?