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The '''Hertzsprung–Russell diagram''' is a type of chart showing the connection of temperature and brightness in stars. The diagram illustrates three groups of stars; the main sequence, the giants and supergiants, and the white dwarfs. It is named after the astronomers [[Ejnar Herzsprung]] and [[Henry Russell]]<ref> ''Universe: The Definitive Visual Guide'' (2005), DK Publishing , page 232.</ref>
 
The '''Hertzsprung–Russell diagram''' is a type of chart showing the connection of temperature and brightness in stars. The diagram illustrates three groups of stars; the main sequence, the giants and supergiants, and the white dwarfs. It is named after the astronomers [[Ejnar Herzsprung]] and [[Henry Russell]]<ref> ''Universe: The Definitive Visual Guide'' (2005), DK Publishing , page 232.</ref>
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==References==
 
==References==
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[[Category:Astronomy]]
 
[[Category:Astronomy]]
 
[[Category:Physics]]
 
[[Category:Physics]]
 
[[Category:Theories]]
 
[[Category:Theories]]
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