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The Sun is the star at the center of the Solar System. | ||||
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same as 109 Earths. | ||||
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although from the surface of the Earth it may appear yellow because of atmospheric scattering. | ||||
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An accurate scientific understanding of the Sun developed slowly, and as recently as the 19th century prominent scientists had little knowledge of the Sun's physical composition and source of energy. This understanding is still developing; there are a number of present-day anomalies in the Sun's behavior that remain unexplained. | ||||
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and is expected to exist for another 4.5 million years from now. |