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Across
  1. 2. help you see
  2. 5. Earth's only natural satellite
  3. 6. our planet
  4. 7. period of darkness
  5. 9. a dark area or shape produced by a body
  6. 11. opposite of night
  7. 12. opposite of dark
Down
  1. 1. Earth,Mars,Saturn
  2. 3. Sun is the biggest one
  3. 4. star at the center of the Solar System
  4. 8. the Milky Way
  5. 10. the path around planet or the moon