FAMOUS MOONS AND PLANETS

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Across
  1. 2. orbits the earth
  2. 4. planet with breathable air
  3. 5. only star in the solar system
  4. 8. planet closest to the sun
  5. 9. named after the Roman god of the dead
  6. 10. nicknamed the red planet
Down
  1. 1. another moon of Pluto
  2. 3. another gas giant
  3. 6. moon of Pluto
  4. 7. the biggest planet in the solar system