Bodies in our Solar System

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Across
  1. 5. was hit by an asteroid while developing
  2. 6. a Galilean moon the size of Mercury
  3. 9. a Galilean moon with a liquid ocean under its crust
  4. 11. this planet is covered in iron
  5. 17. one of the reasons pluto was demoted and has only one moon called MK2
  6. 19. this seperates the rocky planets from the gas giants
  7. 20. the largest dwarf planet
  8. 21. the dwarf planet farthest away from the sun
  9. 23. the smallest planet in our solar system
  10. 26. the outermost dust of our solar system and where comets are formed
  11. 27. mars' bigger moon
  12. 29. roughly the same size as Earth, but spins the opposite way
Down
  1. 1. is elliptical in shape since it spins so fast
  2. 2. Mark Twain was born and died when this passed
  3. 3. seperates the planets from the dwarf planets
  4. 4. this trans-Neptunian object has one moon:
  5. 7. home of the great blue spot
  6. 8. known for having an unexplainable white dot
  7. 10. the largest of the Galilean moons
  8. 12. (look it up)
  9. 13. has at least seven layers of rings
  10. 14. the scientific name for our moon
  11. 15. has a moon so comprable to this body's size, they actually orbit each other
  12. 16. 1000 of this would fit in the sun
  13. 18. this moon is under consideration for terraforming
  14. 22. mars' smaller moon
  15. 24. the only known habitable planet
  16. 25. a Galilean moon and the first moon to be discovered after our own
  17. 28. the brightest object in the sky