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Question
What is the composition of the sun? How was it formed?
Solution
Three-quarters of the sun has hydrogen gas and one quarter has helium gas. It is over a million times as big as the earth. Hydrogen atoms combine or fuse together to form helium under enormous pressure. This process is called nuclear fusion which releases an enormous amount of energy as light and heat. It is this energy that makes sunshine and provides heat. The sun is situated at the center of the solar system.
At the time of the Big Bang, hydrogen gas condensed to form huge clouds, which later concentrated and found numerous galaxies. Some hydrogen gas was left free in our galaxy. With time some changes occurred due to which this free-floating hydrogen gas concentrated and paved the way for the formation of the sun and the solar system.
