The question is really way too imprecise, but fusion joins two nuclei together to form one heavier nucleus. The mass of the new nucleus is less than the sum of the two nuclei that were fused together, the "missing" mass appears as energy.
It works by using nuclear fusion.
Nuclear Fusion
William P Allis has written: 'Nuclear fusion' -- subject(s): Collected works, Controlled fusion
Fusion is a nuclear reaction.
Nuclear fusion produces nuclear energy
Nuclear fusion
Nuclear fusion doesn't produce energy.
In nuclear fusion mass transforms into energy.
No Strontium is produced by nuclear fission not fusion.
Americium was not tested to produce nuclear fusion.
Yes, the sun is a nuclear fusion reactor.
Nuclear fusion is the source of all the sun's energy, and all other stars. It is just called nuclear fusion.