Solar system planet

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Across
  1. 3. What is the eight planet from the sun?
  2. 4. What is the fourth planet from thee sun?
  3. 7. What is the seventh planet from the sun?
  4. 8. What is the fifth planet from the sun?
Down
  1. 1. What planet is closest to the sun?
  2. 2. What is the second planet from the sun?
  3. 5. What is the sixth planet from the sun?
  4. 6. What is the third planet from the sun?