Sun is the prime source of heat and light energy in our earth. It gives life to the all living beings in our home planet. We can never imagine charming lakes, wonderful waterfalls, thunder falls, waving seas, sweet breeze, thick forests, wild animals and human beings without sun. The distance between sun and earth is about 14.96 crore Km and this optimum distance between earth and sun will get enough heat and light energy required for the growth of all living beings.
Sun was formed due to a gravitational collapse happened in a huge molecular cloud about 4.6 billion years ago. It is the central part of our solar system and it attracts 8 planets revolving around in their orbits.When it's compared with the size of the planets, the Sun is so huge and the total volume of all the eight planets and satellites can equal only 1% of the volume of the Sun. If it were a hallow ball, more than 13 lacs of earths would be required to fill it. It is the nearest star of our milky way galaxy and millions and millions of Sun like stars are existing over there.
The surface temperature of the Sun is only 5,778 degree Celsius. The temperature at corona (surface atmosphere) is about 5 million degree Celsius and whereas at the center it would be more than 1.5 crore degree Celsius It is mostly composed of Hydrogen (73.4%) and Helium (25%) and the traces of Oxygen, Carbon, Neon, Nitrogen, Silicon, Magnesium and Sulfur.
Let us see How does our Sun produce light?
The Sun is shining because of the phenomena Nuclear fusion that happens in it. Billions and billions of Hydrogen atoms present in the sun have become the source for the nuclear fusion. The extreme temperature and pressure existing at the inner part of the Sun create a condition at which two hydrogen atoms can combine to form one helium atom. The mass loss that occurs during nuclear fusion converted into abundant light and heat energy. Every pair of hydrogen atoms in the sun will collide with each other and try to combine as a single helium atom. But, it'll require many number of collisions for each successful combination of hydrogen atoms. This phenomena has been occurring for more than 5 billion years. It is estimated that sun burns more than 600 millions of Hydrogen atoms each second. However, it is provided with abundant amount of hydrogen as it can produce light for another 5 billion years.
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| The Sun |
The surface temperature of the Sun is only 5,778 degree Celsius. The temperature at corona (surface atmosphere) is about 5 million degree Celsius and whereas at the center it would be more than 1.5 crore degree Celsius It is mostly composed of Hydrogen (73.4%) and Helium (25%) and the traces of Oxygen, Carbon, Neon, Nitrogen, Silicon, Magnesium and Sulfur.
Let us see How does our Sun produce light?
The Sun is shining because of the phenomena Nuclear fusion that happens in it. Billions and billions of Hydrogen atoms present in the sun have become the source for the nuclear fusion. The extreme temperature and pressure existing at the inner part of the Sun create a condition at which two hydrogen atoms can combine to form one helium atom. The mass loss that occurs during nuclear fusion converted into abundant light and heat energy. Every pair of hydrogen atoms in the sun will collide with each other and try to combine as a single helium atom. But, it'll require many number of collisions for each successful combination of hydrogen atoms. This phenomena has been occurring for more than 5 billion years. It is estimated that sun burns more than 600 millions of Hydrogen atoms each second. However, it is provided with abundant amount of hydrogen as it can produce light for another 5 billion years.
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