The Solar System Crossword

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Across
  1. 5. Cosmic snowballs that form tails when nearing the sun
  2. 6. A small rock body which orbits the sun
  3. 7. The only planet to rotate on it's side
  4. 8. The planet named after the Roman god of war
  5. 9. The biggest gas giant planet in the Solar System
  6. 11. The closest planet to the sun
  7. 13. The only planet to be downgraded to a dwarf planet
Down
  1. 1. Earth's only natural satellite
  2. 2. The only planet to rotate in the opposite direction
  3. 3. The planet with the most notable rings
  4. 4. The eighth planet from the sun
  5. 10. The only planet known to contain life in the Universe
  6. 11. What a meteoroid is known as when it enters Earth's atmosphere
  7. 12. A middle aged dwarf star at the centre of the Solar System