Outer space

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Across
  1. 5. There are eight of them in our solar system
  2. 6. Ball of hot gas
  3. 7. Constellation with a belt
  4. 8. Floating rocks in space
Down
  1. 1. It's the largest planet
  2. 2. It orbits the earth
  3. 3. The path planets take around the sun
  4. 4. The dwarf planet
  5. 6. The center of our solar system
  6. 9. ______ ship