Space Crossword

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Across
  1. 5. Only inner planet with one moon
  2. 6. Small, rocky particle that moves through space
  3. 7. Largest dwarf planet
  4. 9. Time it takes an object to complete one rotaion
  5. 11. Made of gas, dust, and ice
  6. 12. Surface is a reddish color
  7. 13. Hottest planet in the solar system
  8. 14. Plantes made of hydrogen and helium
  9. 15. Once was a planet but now a dwarf planet
Down
  1. 1. Four largest moons of Jupiter
  2. 2. Meteoroid that strikes a planet
  3. 3. Small, rocky object
  4. 4. Time it takes an object to travel once around the sun
  5. 8. Planets made of rock and metal
  6. 10. Forms when a large meteorite strikes