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Across
  1. 3. third planet from the sun
  2. 4. how many earths can fit inside the sun
  3. 5. the moon goes through 12
  4. 7. who was the first man on the moon
Down
  1. 1. a group of stars
  2. 2. who was the first man in space
  3. 6. the biggest star in our universe