What is the astronimical of Sun?

A star is an astronomical object comprising a luminous spheroid of plasma held together by its gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night, but their immense distances from Earth make them appear as fixed points of light.

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The Sun has mass 1.989 × 1030 kg and a radius of ~700,000 km. It lies, on average, one astronomical unit (AU) from the Earth and is about half way through its main sequence lifetime of 10 Billion years.

Angular size from Earth: 32 arc minutes (~0.5 degrees)

Period of rotation: 25 Earth days at Equator

Radius: ~ 700,000 km

Surface Composition: 72% hydrogen, 26% helium, 2% “heavy” elements

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