<P> Fusion reactions create the light elements that power the stars and produce virtually all elements in a process called nucleosynthesis. The Sun is a main - sequence star , and thus generates its energy by nuclear fusion of hydrogen nuclei into helium . In its core , the Sun fuses 610 million metric tons of hydrogen each second and gives helium 606 million metric tons . The fusion of lighter elements in stars releases energy and the mass that always accompanies it . For example , in the fusion of two hydrogen nuclei to form helium , 0.7 % of the mass is carried away from the system in the form of kinetic energy of an alpha particle or other forms of energy , such as electromagnetic radiation . </P>
<P> Fusion reactions create the light elements that power the stars and produce virtually all elements in a process called nucleosynthesis. The Sun is a main - sequence star , and thus generates its energy by nuclear fusion of hydrogen nuclei into helium . In its core , the Sun fuses 610 million metric tons of hydrogen each second and gives helium 606 million metric tons . The fusion of lighter elements in stars releases energy and the mass that always accompanies it . For example , in the fusion of two hydrogen nuclei to form helium , 0.7 % of the mass is carried away from the system in the form of kinetic energy of an alpha particle or other forms of energy , such as electromagnetic radiation . </P>
energy released by the sun is a result of
energy released by the sun is a result of
nuclear fusion of hydrogen nuclei into helium
nuclear fusion of hydrogen nuclei into helium