Space Rocks

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Across
  1. 3. ball of ice and dust
  2. 4. are around nucleus
  3. 7. fallen to Earth's surface
  4. 10. tail tail of dust on comet
Down
  1. 1. middle of comet
  2. 2. shooting star
  3. 5. large rock
  4. 6. belt
  5. 8. shape of a comets orbit
  6. 9. tail tail of gases on comet