The sun, Sol

Mean distance from Earth: 1 Astronomical Unit 150,000,000 km
Diameter: 1,392,530 km
Mass: 330,000
Earths Density: 1.41 grams per cubic centimeter
Surface temp: 5,800 Kelvin
Rotational period: 25 days at the equator 35 days at the poles

Sol, our sun, is a normal yellow star. It was formed about 5 billion years ago, and will last about another 5 billion years. It will never explode, and a solar flare will never destroy the earth. Eventually the sun will become a white dwarf star. The sun is made of mostly hydrogen and helium and its center is so hot that when hydrogen nuclei collide, they stick together and release energy - a process called nuclear fusion No one knows why the center of the sun emits so few neutrinos. It's the closest star to our planet, light still takes 8.3 minutes to traverse the 93 million miles between the sun and the earth. Sol, our sun, is a normal star.