There are billions of stars in our universe.  An important star is located in the middle of our solar system.  which is called the sun.

Sun is an important part of our life on earth

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The Sun was formed about 4.5 billion years ago

91% hydrogen gas is present inside the Sun.  Which is also called the fuel of the sun.  8.9% helium and 0.1% other elements are present

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Due to the high temperature of the Sun, all these substances are in the state of plasma.  The temperature in the upper part of the Sun reaches up to 15000 ° C.

Fusion occurs between helium and hydrogen.  Due to which unlimited amount of energy is released in the sun.  That is why the temperature of the Sun is also so high.

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