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However, Earth is not quite a sphere. The planet's rotation causes  it to bulge at the equator. Earth's equatoriâ¦al diameter is 7,926  miles (12,756 kilometers), but from pole to pole, the diameter is  7,900 miles (12,720 km) - a difference of only 40 miles (64 km).
Compared to Earth, the Sun is enormous! It contains 99.86% of all of the mass of the entire Solar System. The Sun is 864,400 miles (1,391,000 kilometers) across. This is about 109 times the diameter of Earth. The Sun weighs about 333,000 times as much as Earth. It is so large that about 1,300,000 planet Earths can fit inside of it.