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Monday 25 March 2013

The Sun

The insolateshine is a star. It is the star round which the kingdom and other planets revolve. In a way, we can say that sun is the full point of solar family or solar governance. Compared with the millions of other stars, the sun is a medium sized star and of average brightness. The sun appears to be larger and brighter because it is much more nearer to the footing than every other star. Thus, the star nearest to the earth is the sun. Though sun is the nearest star to the earth, even then it is at a distance of 150 x 106 kilometres from the earth and light, travelling at a great speed of 300,000 kilometres per second, takes about 8 proceedings to reach us from the sun.

But light takes about 4.3 long clipping to reach us from the next nearest star c all(prenominal)ed important centuari. The sun is a mass of hot gases, about 109 generation bigger in size than the earth; 330,000 times as heavy as the earth and about 150 x 106 kilometres away from the earth. The diameter of the sun is about 14 x 105 kilometres. The sun is a big ball of fire. The temperature at the surface of the sun is about 6000°C while the temperature at its centre is about 20 million degrees Celsius. Please wrinkle that sun is the only star having a known system of planets with life on one of its planets, called earth.

The sun is not a solid body. It consists mostly of hydrogen gas.

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In the centre of the sun, hydrogen atoms are continuously combining to produce atoms of helium. Each time an atom of helium is formed, tremendous amount of energy is released in the form of heat and light. It is this energy which makes the sun shine. The planets and other objects in the sky reflect a part of the sunlight falling on them due to which they become visible to us.

Even our earth reflects a part of the sunlight falling on it. So, if the earth is seen from a spaceship or moon, the earth will likewise appear as a bright object in space, just like other planets. It should be noted that sun is the main source of heat and light energy for all the members of the solar...If you want to get a full essay, order it on our website: Ordercustompaper.com



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