Science vocab

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Across
  1. 3. magnitude
  2. 7. Distance
  3. 8. Gigantic explosion
  4. 11. Brightness
  5. 12. diagram
Down
  1. 1. magnitude
  2. 2. Collection of stars
  3. 4. spectrum
  4. 5. Cloud of gas
  5. 6. dwarf
  6. 9. Star
  7. 10. Space