Flying from the Sun

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Across
  1. 3. The eighth planet is ...
  2. 5. The third planet is ...
  3. 6. Venus is ...
  4. 8. The sixth planet is ...
Down
  1. 1. The seventh planet is...
  2. 2. The fifth planet is....
  3. 4. There are ... planets in our solar system.
  4. 7. Mercury is ...
  5. 9. Mars is ... at night