The Sun

The sun is the nearest star to Earth with an average distance of 149,680,000 kilometers (93,026,724 miles). The sun and the eight planets fruit (which is known / discovered by humans) to form the Solar System. The sun is categorized as a small star of G.
The sun is a ball of incandescent gas, and it was not really round. The sun has equatorial and polar due to the rotational motion. Midline ekuatorialnya 864,000 miles, while the middle line between the poles 43 miles shorter. The Sun is a member of the Solar System greatest, because 98% of the mass of the Solar System accumulated in the sun.
In addition to the distribution center, the sun is also a central source of energy in the solar neighborhood. The sun consists of core and three layers of skin, each photosphere, and corona kromosfer. To continue to shine, the sun, which consists of hot gas exchange substances with the substance of hydrogen helium through nuclear fusion reactions at levels of 600 million tonnes, with the loss of four million tons of mass each time.
The sun is believed to form at 4.6 billion years ago. Density is 1.41 solar masses versus mass of water. The number of solar energy reaching the Earth's surface that are recognized as the solar constant equals 1370 watts per square meter at any time. Sun-centered solar system is a second-generation star. Material from the sun formed from the explosion of the first generation of stars as believed by scientists, that the universe was formed by the big bang explosion about 14,000 million years ago.