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A Hertzsprung-Russell (H-R) diagram sorts stars by which two things?

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  1. Distance from Earth and age
  2. Size of planets and number of moons
  3. True brightness and surface temperature

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References

  1. CAP Aerospace Dimensions Module 5, Space Environment (Alaska Wing copy) akwg.cap.gov/media/cms/Module_5__Space_Environment_C640727DEF762_83c5b.pdf Checked 2026-10-12.

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