Stars and HR Diagram Crossword

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Across
  1. 1. If the mass of a "star" is too low or <0.08Msun
  2. 3. the coldest star color
  3. 6. an object moving away is ____ed
  4. 12. 90% of stars
  5. 13. a massive object that is infinitely dense
  6. 14. varying light from a star indicates that there are two stars present
  7. 17. another word for brightness
  8. 18. Hertzsprung and Russell made this
  9. 19. we can't know what goes on inside of this
  10. 20. the outer layers of a low mass star blown away from a
  11. 21. when we see a binary star system with one star orbiting another directly around another over time
Down
  1. 2. how bright something appears to be
  2. 4. the birth of a star before Main Sequence
  3. 5. this object is created when a low mass star runs out of fuel
  4. 7. using the doppler effect to determine that there is a binary star system
  5. 8. the actual brightness or luminosity
  6. 9. a fast-rotating neutron star
  7. 10. a cloud in space
  8. 11. violent explosion after a supergiant dies
  9. 15. a small, massive, dense object left behind after a supernova
  10. 16. the last stage of a low mass star; it is on the HR diagram
  11. 22. this object is created when a large mass star runs out of hydrogen fuel