Eric's epic crossword

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Across
  1. 2. what started the universe
  2. 3. the smallest planet in our solar system
  3. 4. the hottest from the sun
  4. 6. coldest planet in our solar system
  5. 10. spins on its side
  6. 11. a rock that orbits around us
  7. 12. you can live on this planet
Down
  1. 1. 2 biggest planet
  2. 5. a big hot star in the middle of our solar system
  3. 7. a dwarf planet planet
  4. 8. 70% of it is water
  5. 9. a big red dot in it
  6. 11. red rust known as the red planet