What is the Sun made up of?
Hydrogen, the most abundant element in the Universe, is also the main constituent of the Sun, with most of its mass concentrated towards its centre.
Is the Sun a ball of fire?
In an ordinary fire, oxygen combines with various fuels, releasing heat and light. However, the fire in the Sun is not an ordinary fire but is similar to a continuous hydrogen bomb explosion, wherein a small quantity of matter is converted into an enormous quantity of energy in a conversion process that is ten million times more effective than ordinary combustion.