Objects in the Solar System

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Across
  1. 4. Only moon in the solar system with a thick atmosphere
  2. 5. Closest planet to the sun
  3. 7. A cold, blue planet
  4. 8. Has the largest rings of any planet
  5. 10. Sometimes called "Earth's Twin"
Down
  1. 1. Jupiter's largest moon
  2. 2. More than 95 percent carbon dioxide
  3. 3. Largest planet
  4. 4. A group of canyons circle this moon
  5. 6. Has a "Goldilocks" condition-just right
  6. 9. A chunk of rock or metal smaller than an asteroid
  7. 11. Rotates on its axis at an angle of about 90 degrees