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What does a star's absolute magnitude measure?

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  1. How bright it looks from Earth
  2. How hot its core is
  3. Its true brightness at a set distance

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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 2026-10-10.

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