Space

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Across
  1. 2. night
  2. 4. large
  3. 7. 4th-moons
  4. 9. constellations
  5. 11. first
  6. 12. brightness
Down
  1. 1. planets
  2. 2. rocks
  3. 3. red
  4. 5. rings
  5. 6. life
  6. 8. wind
  7. 10. backwards