Sun or Surya is also called (from the name of god "Surya" - the sun god in the Hindu belief) is the nearest star to Earth with an average distance of 149.68 million kilometers (93,026,724 miles). The sun and the eight planets (which is already known / discovered by humans) to form the Solar System. The sun is categorized as a small star type
Illustration of the structure of the sun
The sun is a ball of incandescent gas and it did not completely spherical. Sun has the equator and poles since the rotational motion. Diameter ekuatorialnya 864 000 miles, while the middle line between the poles 43 miles shorter. The Sun is a member of the largest solar system, because 98% of the mass collected on the sun of the Solar System.
Besides being a center of circulation, the sun is also a central source of energy in the solar neighborhood. The sun's core and consists of three layers of skin, each photosphere, chromosphere and corona. 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 of 1.41 solar masses is proportional to the mass of water. Total solar energy reaching the Earth's surface that are recognized as the solar constant equals 1370 watts per square meter at any time. The sun as the center of the Solar System is the second-generation star. Materials from the sun formed from the explosion of the first generation of stars like that are believed by scientists, that the universe was created by the big bang explosion about 14 000 million years ago.
