Astronomy Crossword

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Across
  1. 3. Doctors use it
  2. 5. Brightness as observed from earth
  3. 7. Shows Classification of stars
  4. 11. Rainbow that provides information about a star
  5. 12. A world of color
  6. 14. Distance light travels in a year
  7. 15. Sunburns
  8. 16. The complete range of all types of radiation
  9. 17. Stars much brighter than main sequence stars
Down
  1. 1. The biggest stars on the HR Diagram
  2. 2. Always Harmful
  3. 4. Dark Lines that show composition of stars
  4. 6. Bright lines that show elements in stars
  5. 8. Lowest Frequency Light
  6. 9. Intrinsic Brightness
  7. 10. Major Class of stars
  8. 13. Stellar Core Remnants