Nuclear fission

Nuclear fission is a nuclear reaction in which a heavy nucleus splits into two lighter nuclei, releasing a considerable amount of energy.

In the 20th and 21st century, nuclear fission was used as a power source in nuclear fission reactors, but also as a devastating weapon. Nuclear fission produces beta radiation. 

The thought of nuclear fission taking place in a planet's atmosphere shocked Quark and Rom when they learned about it from Nog in 1947. 

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Kernspaltung Fission nucléaire