Sun

The sun is just one of about 100 billion stars in our galaxy. The Sun is by far the largest object in the solar system. It contains more than 99.8% of the total mass of the Solar System. The Sun's diameter is around 1.4 million km. It is approximately 109 times wider than the earth. The diameter of the Sun is 840,000 miles which is more than 100 times the diameter of the Earth. Its mass is more than 300,000 times that of the Earth with a surface temperature of about 5500° C. The outer layers of the Sun exhibit differential rotation at the equator the surface rotates once every 25.4 days and near the poles it's as much as 36 days. The Sun is about 4.5 BILLION YEARS old. It will probably continue to exist in its present FORM for about another 5 BILLION YEARS before RUNNING out of HYDROGEN. Astronomers think that the Sun formed from the solar nebula about 4.59 billion years ago. The Sun is in the main sequence stage right now, slowly using up its hydrogen fuel.