Nuclear power
Nuclear power was an energy source, by use of nuclear fission that converted the splitting of a nuclei into large amounts of energy. Centerpoint Station used nuclear power along with many other power sources to create it's legendary Hyperspace tractor beam. In the Pre-Republic era, nuclear-powered rockets emerged as the first type of warships. In 19 BBY, Jax Pavan tried to drop his lightsaber into a nuclear core in a factory, to cause an explosion and fake his own death.