Red giant

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A red giant is a type of star that has fused all the hydrogen in its core. It swells in size as it fuses the heavier elements into even heavier elements and eventually turn into a white dwarf. Sometimes, if the red giant is 1.25 Solar masses, it will go supernova and turn into a neutron star or black hole. The Sun is expected turn into a red giant in approximately 5,000,000,000 years