SOLAR SYSTEM

Detailed explanation-1: -About three quarters of the sun is hydrogen, which is constantly fusing together and creating helium by a process called nuclear fusion. Helium makes up almost the entire remaining quarter.

Detailed explanation-2: -The Sun is a typical star, and is also the star that is nearest to the Earth. It is composed of a mixture of 73% hydrogen, 25% helium, and 2% other elements by weight.

Detailed explanation-3: -The Sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silicon, magnesium and sulfur.

Detailed explanation-4: -The sun is mostly composed of hydrogen and helium. There are also heavier elements such as oxygen and carbon, but just how much is controversial.

Detailed explanation-5: -The Sun will expand to a red giant which fuses helium to carbon and oxygen in its core by the Triple Alpha Process. After the helium in its core is used up, the Sun will shed its atmosphere and in the process create a Planetary Nebulae.