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The Sun is a star at the center of our solar system. Our Sun is a medium-sized yellow star that is 93,026,700 miles (149,680,000 km) from Earth. Its diameter is 865,121 miles (1,391,980 km). At its core, nuclear reactions produce enormous amounts of energy, through the process of converting hydrogen atoms into helium atoms (nuclear fusion). The Sun's absolute magnitude is +4.83. The solar mass is 1.99 x 1030 kg.
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