Like Galileo, Cassini is powered by the natural decay of the radioactive element plutonium, which generates heat that is then converted to electricity.

Accipitral renascence, it is the environment that a business fits internationalization actually, it is a natural decay, be a kind of new capacity build, still be among this process.

The radioisotope thermoelectric generator which is employed in deep space exploration, converts heat from the natural decay of radioisotope materials into electrical power directly.