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Across
  1. 3. ring of gas and dust expelled by a dying star
  2. 6. galaxy that contains our solar system
  3. 7. phenomenon where light from a star is blocked by another celestial body
  4. 9. layer of the earth's interior is primarily composed of solid iron and nickel
  5. 10. brightest object in the night sky after the moon
Down
  1. 1. galaxy nearest to the Milky Way
  2. 2. largest planet in the solar system
  3. 4. theory that explains the birth of the universe
  4. 5. resistance of an object to change in its motion called?
  5. 8. closest star to earth