The US government is developing a huge nuclear fusion plasma cannon and it could be ready by next year.

Besides creating space-age nuclear weapons, some people think harnessing nuclear fusion correctly could lead to a limitless clean energy source.

The technology is called the Plasma Liner Experiment (PLX) and it's being created just outside of Santa Fe in New Mexico.

Nuclear fusion occurs when atoms are smashed together.

A staggering 18 of the 36 intended plasma guns have already been installed onto the cannon.

It will use the same type of reaction when it turns on as the reaction which powers the Sun.

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