HR diagrams and galaxies

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Across
  1. 3. small and cool star on the main sequence
  2. 5. dying star
  3. 6. largest stars in the universe by size
  4. 8. A cluster of millions of bilions of stars mixed with dust and gas held together by gravitational attraction
  5. 9. small stars that are the size of a planet
  6. 12. a galaxy shaped like an oval and is the most abundant
Down
  1. 1. a galaxy shaped like a spiral that has arms
  2. 2. a galaxy that has no defined shape which is the leftovers of 2 colliding galaxies
  3. 4. where 90% of stars are
  4. 7. medium in size,shape, and color
  5. 10. classification by their spectra and temperature
  6. 11. plots each star on a graph and measures the star's magnitude against its temperature