SOLAR SYSTEM

Detailed explanation-1: -A star’s energy is the result of a process known as thermonuclear fusion in which two hydrogen nuclei are combined together to form a helium nucleus, at extremely high pressure and temperature of about 107 K. During the fusion, an enormous amount of energy is released in the form of heat, light, and electricity.

Detailed explanation-2: -The Sun is a main-sequence star, and thus releases its energy by nuclear fusion of hydrogen nuclei into helium. In its core, the Sun fuses 500 million metric tons of hydrogen each second. The nuclear binding energy curve. The formation of nuclei with masses up to iron-56 releases energy, as illustrated above.

Detailed explanation-3: -Energy release Overall, four protons are converted into one helium nucleus. Energy is released because the helium nucleus has slightly less mass than the original four protons.

Detailed explanation-4: -It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy. The difference between the mass of 4 H atoms and 1 He atom is 0.02862 AMU which is only 0.71% of the original mass. This small fraction of the mass is converted into energy.

Detailed explanation-5: -So the amount of energy released per nucleon in this process is 26.75MeV.