The mean radius of the sun is 432,450 miles (696,000 km). It is made of 91.0% hydrogen and 8.9% helium. By mass, the sun is about 70.6% hydrogen and 27.4% helium. And the hottest part of the sun is its core. The surface temperature of the sun is 5,778 Kelvin, and the center of the sun is around 15 million Kelvin.
The sun is locked at the center of our solar system. It is a yellow dwarf star and sun is largest object in our solar system.
The sun Accounts for 99.86% of the mass in the solar system. And the age of the sun is 4 603 billion years and we can't live without the sun.
The sun formed more than 4.5 billion years ago, when a cloud of dust and gas called a nebula collapsed under it's own gravity. As it did, the cloud spun and flattened at its center.
Facts about the sun,
1. The sun is travelling at 220 km per second.
2. One day the sun will consume the earth.
3. Over one million earth could fit inside the sun.
4. Sun is bigger than earth.
5. Sun is yellow dwarf.
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