Love to do some charity work. Have a passion for writing and do it in my spare time
W. Mocroft, Philanthropist, Master Degree in International Business, Las Vegas
Answered Nov 20, 2018
The sun is constantly giving off heat as a result of chain reactions happening on its surface. They occur due to spontaneous fusion and fission reactions. If these reactions stop, the sun will lose its energy source. It is speculated that if all the chain reactions stop, the hot ball of burning gas will go out and the light and heat we claim from it will vanish.
However, the sun is expected to burn for millions of years as no one knows for sure how many resources are present. Until that time, every chain reaction acts as an initiator of another chain reaction, keeping the sun burning.