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The Sun, Our Star. The Sun is an average star.From the Sun, we base our understanding of all stars in the Universe.No solid surface.. Vital Statistics. Radius = 100 x Earth (696,000 km)Mass = 300,000 x Earth (1.99 x 1030 kg)Surface temp = 5,800 KCore temp = 15,000,000 KLuminosity = 4 x 1026 Wa
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