Crossword puzzle with the planets

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Across
  1. 3. known as "red planet"
  2. 6. larges planet in the solar system
  3. 7. coldest planet in the solor system
Down
  1. 1. the second planet from the Sun
  2. 2. flattest planet in the solor system
  3. 3. smallest planet in the solor system
  4. 4. blue and green planet with humans
  5. 5. farthest-known Solar planet from the Sun