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of 15000000 K.

The core is made of hot, dense plasma (ions and electrons), at a pressure estimated at 26.5 e6GPa at the center. Due to fusion, the composition of the solar plasma drops from about 70% hydrogen by mass at the outer core, to 34% hydrogen at the center.

The core contains 34% of the Sun's mass, but only 3% of the Sun's volume, and it generates 99% of the fusion power

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