space

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Across
  1. 4. the seventh planet
  2. 6. this is a dwarf planet
  3. 8. sixth planet
  4. 9. there are billions of them
Down
  1. 1. we live on it
  2. 2. the biggest planet
  3. 3. you can see it at night
  4. 5. if you go in you will never come out
  5. 7. a place were lots of stars are
  6. 9. produces light during the day