HR diagram

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Across
  1. 5. cool, large star that is bright
  2. 6. how bright a star is at 10 parsecs
  3. 7. small dense star
  4. 10. luminous
Down
  1. 1. how bright a star appears from Earth
  2. 2. how hot a star is, measured in Kelvin
  3. 3. a series of star types
  4. 4. a star of great size and luminosity
  5. 8. small, old relatively cold star
  6. 9. group a star is classified in