Last time we saw the making of the beautiful and mysterious stars scattered throughout our Universe. Of course, our Sun is also a star and it is fair to wonder how it lives. Each day we see a glowing ball rise up (or is it that the Earth is moving?) and illuminate the Earth with its light and warmth. (What happens to the Moon then?) So, one wonders that how does it create so much energy to provide us not only light but also warmth so far away from itself. (Any ideas?)
Most of the matter in the Sun (or any other star) consist of Plasma. (Plasma is a state between liquid and gas.) By far, hydrogen gas is present most abundantly in the Sun.
So this is how the story goes. As the temperature at the core (center) of the Sun started to increase (which we know from the previous issue) a reaction called “nuclear fusion” started to take place. This reaction released, among few other things, an unimaginable amount of energy.
This energy heats up the center of the Sun even more, hence increasing the speed of the reaction. It also exerts outward “pressure” to counteract the inward pressure of the weight of the Sun. Which means that it keeps the Sun from collapsing. One can imagine it to be like a chain event.
The reaction keeps the sun alive and till the hydrogen supplies last, the Sun will stay bright and burning and keep giving us warmth and light.