Supergiant
Type of star that is massive and luminous / From Wikipedia, the free encyclopedia
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For other uses, see Supergiant (disambiguation).
Supergiants are among the most massive and most luminous stars. Supergiant stars occupy the top region of the Hertzsprung–Russell diagram with absolute visual magnitudes between about −3 and −8. The temperature range of supergiant stars spans from about 3,400 K to over 20,000 K.