Nuclear fusion is the process in which two or more lighter atoms get fused into each other and form a heavier atom. It releases a large amount of energy as again there is some loss of mass that gets converted into energy as per E=mc²

₁H² + ₁H³ → ₂He⁴ + 14.1 MeV

NUCLEAR FUSION: SOURCE OF SUN’S ENERGY

Nuclear Fusion: Source of Sun’s Energy– Yes, you got it right. It is nuclear fusion that is happening at the Sun and gives us all the energy. Hydrogen is continuously getting converted into Helium and other heavier atoms releasing enormous amounts of energy.