CELESTIAL BODIES

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Across
  1. 3. huge cluster of stars
  2. 4. Blue planet
  3. 8. layer of life
  4. 10. rocky layer
  5. 12. metallic body
  6. 13. millions of galaxies
  7. 14. nearest star to the Earth
Down
  1. 1. air blanket
  2. 2. water layer
  3. 5. deleted planet
  4. 6. celestial body with head and tail
  5. 7. Earth like shape
  6. 9. small rocky object
  7. 11. Earth's twin
  8. 12. natural satellite of the Earth