The Sun, just one of more than 100 billion stars in our galaxy, is the largest object in our solar system. It contains more than 99.8% of the total mass of the solar system (with Jupiter containing most of the rest). The Sun is one of the larger stars in the galaxy. Currently the Sun consists of about 70% hydrogen, 28% helium and 2% metals. However these figures are slowly changing as the Sun converts hydrogen to helium in its core. The Sun's energy output is 386 billion billion megawatts and is produced by nuclear fusion. Each second about 700,000,000 tons of hydrogen is converted to abou...
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