Permissive Action Links are powered by low-maintenance radioisotope generators.

It is used as a heat source in many Russian/Soviet radioisotope thermoelectric generators, usually in the form of strontium fluoride.

Whereas the full "active" reactor system in a nuclear thermal rocket can be expected to generate over a gigawatt, a radioisotope generator might get 5 kW.

The Pioneer space probes are powered by radioisotope thermal generators located on the end of a long arm to keep their radiation away from the spacecraft electronics.

These designs include the direct charging generators, betavoltaics, the optoelectric nuclear battery, and the radioisotope piezoelectric generator.

It proposes to use a radioisotope thermal generator with ion thrusters.

Energy will be provided by radioisotope thermoelectric generator, so that the rover can operate through lunar nights.

The trench is the last resting place of the radioisotope thermoelectric generator from the aborted Apollo 13 mission.

It is a potential fuel for long-lifetime radioisotope thermoelectric generators.

The Soviet Union built a number of automated lighthouses powered by radioisotope thermoelectric generators in remote locations.