GENERAL KNOWLEDGE

Detailed explanation-1: -Nuclear Fusion reactions power the Sun and other stars. In a fusion reaction, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei. The leftover mass becomes energy.

Detailed explanation-2: -Stars produce their energy through nuclear fusion. For most stars, this process is dominated by a process called the “proton-proton chain, ‘’ a sequence of events that transforms four hydrogen atoms into one helium atom.

Detailed explanation-3: -Once the temperature reaches 15, 000, 000 degrees Celsius, nuclear fusion takes place in the center, or core, of the cloud. The tremendous heat given off by the nuclear fusion process causes the gas to glow creating a protostar. This is the first step in the evolution of a star.