the sun

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					The sun is a giant ball made ??up of hydrogen and helium gas. [1] The sun
including a white star that acts as the center of the solar system. [2]
[3] [4] All the components of the solar system including the eight
planets and their satellites, planets -dwarf planets, asteroids, comets
and space dust rotating around the Sun. [5] In addition to the central
circulation, the Sun is also a source of energy for sustainable living.
[6] The hot sun warms the earth's climate and form, while the light is
illuminating the Earth and is used by plants for photosynthesis. [6]
Without the Sun, will not be there is life on Earth because many chemical
reactions can take place. [6]

Nicolaus Copernicus was the first to put forward the theory that the Sun
is the center of circulation of the solar system in the 16th century. [7]
This was later proved by Galileo Galilei and other sky watchers. [7] The
theory that became known by the name of this heliosentrisme break
geosentrisme theory (earth as the center of the solar system) proposed by
Ptolemy and has survived since the second century BC. [8] the concept of
nuclear fusion by Subrahmanyan Chandrasekhar presented and Hans Bethe in
1930 finally be able to explain exactly what it is Sun

				
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posted:7/19/2012
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