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Complete Education About The Sun

By Haywood Hunter


The Sun is one of many stars that can be found in the solar system, except that it is the biggest. It has a very huge size and covers 98 percent of the overall size of the solar system. With an average rotation of twenty five days at the equator, and thirty six days at the poles the Sun is really big.

The Sun's diameter is about one million three hundred and ninety two thousand km, and about one hundred and nine times the size of Earth put together. A three quarter of it is comprised of hydrogen mass with the remaining components being helium and other gases. Studies show that it orbits about twenty five thousand light years from the galactic core and completes a revolution once in every two hundred and fifty million years.

The Sun's interior comprises of a Core, Radiative and Convective zones. The core is the innermost part where energy is generated through nuclear fusion. It is extremely hot and dense. The energy is transported from the hot core to the Radiative zone which is colder and covers about eighty five percent of the radius of the Sun.

The Convective zone is the part just below the Sun's surface and covers about fifteen percent of the surface of the Sun. Energy is transported by a bulk motion of gas, and this is a process called convection.

The layer of the Sun that can be seen outside is called the photosphere and its temperature is six thousand degrees Celsius. It looks like it is always molting because of the unrest created as a result of internal eruptions.

The photosphere is referred to as the Sun's surface because it has photons that are able to escape into space. It is around 500 km thick, and extremely heated up, gaseous, and not something that can be seen through with ordinary eye alone.

The area above the photosphere is called the Chromosphere. Solar energy passes through the Chromosphere from the core. The bright luminous hydrogen clouds are called Faculae and form sunspots above.

From gathered statistics, the Sun is 4.6 billion years in activity and will continue for another 5 billion years. It also predicts, the Sun will change in its last days by fusing helium into elements that are heavier. It will become very big and overcome the Earth. Then at the expiration of a billion years, it will change into what is called white dwarf and then stay another trillion years to cool down and ultimately fade into a black dwarf.




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