Planets Crossword Puzzle

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Across
  1. 2. the closest planet to the sun
  2. 4. small planet huge debates
  3. 6. named after the god of the sea
  4. 9. the planet most famous for its rings
Down
  1. 1. the first planet outside of the asteroid belt
  2. 3. as far as we know the only inhabited planet
  3. 5. in between Mercury and Earth
  4. 7. the seventh planet from the sun
  5. 8. named after the roman God of war