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Fission vs. fusion: What's the difference?

Fission vs. fusion: What’s the difference?

Fission and fusion are both natural atomic processes that release incredible amounts of energy, but in many ways, they are opposites. Fission involves the splitting of a single, generally heavy, atomic nucleus, whereas fusion requires the combining of two or more light atoms. 

Atoms include protons and neutrons bound together in a central nucleus. Radioactive elements, like uranium, may contain dozens of these particles in their atomic hearts. 

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