Glossary term: Nuclear Fission

Description: Nuclear fission is a process where the nucleus of a heavy element splits into two lighter nuclei. The mass of the remaining material is less than that of the original nucleus, while the deficit in mass is released as energy.

The two lighter nuclei produced by nuclear fission are often radioactive themselves and can release further energy through radioactive decay.

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Term and definition status: This term and its definition have been approved by a research astronomer and a teacher

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