Things found in space

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Across
  1. 2. The hottest planet in our solar system
  2. 4. The closest planet to the sun
  3. 6. Space rocks that fall to the surface of planets
  4. 9. explorer in space
Down
  1. 1. A group of stars that form a pattern
  2. 3. The largest planet in our solar system
  3. 5. The dwarf planet that was first thought to be a planet
  4. 7. The only planet with known life
  5. 8. Made of dust, rock and ice