Astronomy and Space

Hertzsprung–Russell diagram

A Hertzsprung–Russell diagram (abbreviated as H–R diagram, HR diagram or HRD) is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities and their stellar classifications or effective temperatures. It is also sometimes called a color magnitude diagram. The diagram was created independently in 1911 by Ejnar Hertzsprung and by Henry Norris Russell in 1913, and represented a major step towards an understanding of stellar evolution.

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See also

• ▸2069 Alpha Centauri mission
• ▸Doreen Lorenzo
• ▸Ganymede (moon)

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