space

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Across
  1. 5. first person to land on the moon
  2. 7. fiery ball of hydrogen and helium gas
  3. 8. closest planet to the sun
  4. 12. large clusters of stars
  5. 13. only planet known with life
  6. 14. our closest star
Down
  1. 1. the name of our galaxy
  2. 2. biggest planet in our solar system
  3. 3. largest dwarf planet
  4. 4. a planet that may have had life on it
  5. 6. a natural satellite
  6. 9. number of planets in our solar system
  7. 10. first planet found using a telescope
  8. 11. coldest in our solar system