Hertzsprung-Russell Diagram

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Across
  1. 3. The graph of stars is called ____
  2. 5. Different stars have different brightness, or _____
  3. 7. Stars that have burned up all their hydrogen are called _____
  4. 9. The circle of life is called the ____
Down
  1. 1. In a _____ far, far away.
  2. 2. stars in their death stage are called ____
  3. 4. the _____ on the Sun is very high.
  4. 6. Middle aged stars are called _____ stars
  5. 8. The most massive stars are called ____