The Sun is a star at the center of the Solar System. All the planets revolve around it. The diameter of our closest star, the Sun of our solar system, is 1,392,000 kilometers. The Sun is thought to be 4.6 billion years old.
The Sun is a medium size star known as a yellow dwarf. The temperature in its core is estimated to be over 15,000,000 degrees Celsius.
Because the Sun is so massive, it exerts a powerful gravitational pull on everything in our solar system. The Sun is the most prominent feature in our solar system. It is the largest object and contains approximately 98% of the total solar system mass. One hundred and nine Earths would be required to fit across the Sun's disk, and its interior could hold over 1.3 million Earths!
However the Sun is a normal G2 star, one of more than 100 billion stars in our galaxy.