Nuclear fusion is a reaction in which two nuclei are combined to form a larger nucleus. it releases energy when light nuclei are fused to form medium-mass nuclei. • fusion is the source of energy in what?
blunt
sinks then rises
orbits
stars
32.5 Fusion • Nuclear fusion is a reaction in which two nuclei are combined to form a larger nucleus. It releases energy when light nuclei are fused to form medium-mass nuclei. • Fusion is the source of energy in stars, with the proton-proton cycle, 1.