Solar systems

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Across
  1. 4. A region of icy bodies beyond Neptune, home to Pluto and other dwarf planets
  2. 6. A group of celestial objects orbiting a star.
  3. 8. The only planet in our solar system known to support life
  4. 9. A giant ball of hot gas at the center of our solar system
Down
  1. 1. The largest planet in our solar system
  2. 2. The hottest planet in our solar system
  3. 3. A dwarf planet, known for its unusual tilted axis potential for an underground ocean
  4. 5. A dwarf planet known for its icy surface and potential for life
  5. 7. The second largest planet in our solar system