planets cross puzzle

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Across
  1. 2. used to be a planet
  2. 3. scientist believe there was this on mars long ago
  3. 5. Neptune have a big one of these called the great blue spot
  4. 6. these are very small planets
  5. 8. this moon is believed to have water.
  6. 12. this planet once had water on it
  7. 13. is the hottest planet
  8. 16. Pluto is a part of this belt
  9. 18. has the great red spot
  10. 19. the advanced organisms that reside on earth
  11. 22. travel eleven km per second
  12. 23. has light rings that rotate vertically
Down
  1. 1. these have two tails, gas tails and Ion tails
  2. 4. Venus surface is covered with these landforms
  3. 7. has the dark blue spot
  4. 9. Saturn is most know for this
  5. 10. Made of rock and iron
  6. 11. this moon orbit Jupiter and its the largest moon
  7. 14. this planet is most naturist for its rings
  8. 15. Uranus is one of these(hint frozen)
  9. 17. the only planet that can support life
  10. 20. these orbit around planets
  11. 21. takes eighty-eight earth days for one year