Astronomy crossword

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Across
  1. 4. small lumps of rock or iron that orbit the sun
  2. 5. The once-planet that is now a dwarf planet
  3. 7. Only planet not named after a god
  4. 8. A storm produced by the sun
  5. 10. What our solar system revolves around
  6. 11. Large group of dust, stars, and gas
  7. 12. Hottest planet in our solar system
  8. 14. Planet with the largest ocean
  9. 17. There is a massive and constant ___ on Jupiter
  10. 18. Planet with a hexagonal-shaped storm
  11. 19. Most common kind of galaxy
  12. 20. the moment in a stars life where it swells up
Down
  1. 1. Venus and Mercury have a __ rotation
  2. 2. A 'cosmic snowball' of frozen gases, rock, and dust
  3. 3. A burst of intense radiation from the release of magnetic energy associated with sunspots
  4. 6. A large and dark spot on the suns surface
  5. 7. How many planets are in our solar system
  6. 9. the name of our galaxy
  7. 13. The remaining, small, corpse of a star
  8. 15. Small, rocky object that orbits the sun
  9. 16. How many AU's are in between the sun and earth
  10. 17. The planet with the most notable rings in our solar system