Launchpad: What Are Radioisotope Power Systems?

On our NASA site at: nasaeclips.arc...
NASA uses Radioisotope Power Systems, or RPS, to convert heat from radioactive decay to electricity, creating predictable, continuous power for long missions in extreme environments. But learn how a next generation Radioisotope Stirling Engine will perform four times more efficiently and help NASA use even less of a precious resource.