Scaled to the size of a beach ball,say scientists, the sun's equatorial bulge would be less than the width of a human hairThe sun is the most perfectly round natural object known in the universe, and say scientists who acquire conducted precise measurements of its dimensions.
As a spinning ball of gas,astronomers had always expected our nearest star to bulge slightly at its equator, making it very slightly flying-saucer shaped. The planet Jupiter demonstrates this effect well. Its high rate of spin - once every 10 hours - means that it is nearly 7% wider across its equator than the distance from pole to pole.
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Source: theguardian.com