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Equator circumference: 4,379,000km. Temperature: 5,973C to 15,000,000C. Average orbital speed around the Milky Way: 720,000km/h (200km/s) Average time taken to rotate on axis: 27 Earth days. Our Favorite Facts About the Sun The sun is a 4.5-billion-year-old star. ... The sun is about 93 million miles from Earth. ... It's the largest object in our solar system. ... The sun's gravity holds the solar system together. ... The sun's activity influences the nature of space throughout the solar system.
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