solar system

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Across
  1. 3. the blue planet
  2. 4. light travels from the sun to earth in 8 ______
  3. 6. farthest planet in the solar system
  4. 7. our galaxy
  5. 8. Mercury has a surface covered with _______
Down
  1. 1. giant star
  2. 2. smallest planet in the solar system
  3. 4. earth only natural satellite
  4. 5. largest planet in the solar system
  5. 7. the red planet