TEKS 8.8A

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Across
  1. 4. hot,mid sized,bright stars
  2. 5. plots stars on brightness and temperatures
  3. 6. consists of galaxies
Down
  1. 1. larger radius and luminosity than a mainsequence
  2. 2. massive and most luminous stars
  3. 3. cloud of dust and gas/nursery for new stars