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Created page with "== Introduction == A "Blue Giant" is a type of star that is characterized by its high temperature and luminosity. These stars are typically found in the upper left portion of the Hertzsprung-Russell diagram, a graphical tool that astronomers use to classify stars based on their luminosity, spectral type, color, temperature, and evolutionary stage. Blue giants are massive stars that have exhausted the hydrogen in their cores and have moved off the main sequence. They are..."