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Sun

We're announcing the Sun is the source for Kitaa President of the earth, sun tanpaa gelkap world, following the sense of the sun ..
The sun is the main star of the Solar System and is the main component of this solar system. Save the Earth's mass, measuring 332,830. This causes large mass density of the core is large enough to be able to support the sustainability of nuclear fusion and spewing tremendous amounts of energy. Most of this energy is radiated into space in the form of electromagnetic radiation, including optical spectrum.
Sun categorized into yellow dwarf star (type GV) mid-sized, but this name can lead to misunderstandings, as compared with the stars in the Milky Way galaxy, the sun, including quite large and bright. Stars are classified by the Hertzsprung-Russell diagram, a graph that describes the relationship of the value of the luminosity of a star to its surface temperature. In general, the

hotter stars would be more brilliant. The stars that follow this pattern is said to lie on the main sequence, and the sun is located right in the middle of the series. However, the stars brighter and hotter than the Sun are rare, while the stars are much fainter and cooler are common.
It is believed that the sun's position on the main sequence is generally a "peak of life" of a star, because there is exhaustion of stored hydrogen for nuclear fusion. Currently the Sun grows more brilliant. In early life, the brightness level is about 70 per cent of the brightness now
The sun is metalisitas categorized as star of "population I". Stars are formed over the final category at the evolution of the universe, so it contains more elements heavier than hydrogen and helium ("metals" in astronomical term) as compared to the star "II population." Elements heavier than hydrogen and helium formed the core of an ancient star exploded. The first generations of stars have become extinct before the universe could be filled by elements heavier this. Oldest stars contain very little metal, while new stars have a higher metal content. Metalitas a high level is expected to have an important influence on the formation of the Solar system, since the formation of the planet is the result of clumping metal.
The sun is a ball of incandescent gas and it did not really round. The sun has the equator and the poles due to the rotational motion. Ekuatorialnya midline 864,000 miles, while its polar diameter between 43 mile shorter. Sun is a member of the solar system, because 98% of the mass of the Solar System collects the sun.
In addition to the distribution center, the sun is also a central source of energy in the solar system. The sun consists of a core and three layers of skin, each photosphere, chromosphere and corona. To continue to shine, the sun, which consists of hot gas hydrogen exchange substances with substances helium through nuclear fusion reactions at levels of 600 million tonnes, with it losing four million tons of mass every time.
Believed the sun formed 4.6 billion years ago. Density is 1.41 solar masses versus mass of water. The amount of solar energy reaching the Earth's surface that are recognized as the solar constant equaling 1370 watts per square meter at any time. The sun as the center of the Solar System is the second generation of stars. Material from the sun formed from the explosion of the first generation of stars as believed by scientists, that the universe was created by a big bang explosion about 14,000 million years ago.