radioisotope thermoelectric generator

Concept

Nuclear power source that converts heat from plutonium-238 decay into electricity for spacecraft

3 stories

NASA Powers Down Voyager 1 Science Instrument to Conserve Power 15 Billion Miles Away

NASA Powers Down Systems on Voyager 1 as Spacecraft Continues Interstellar Journey

NASA Deactivates Instrument on Voyager 1 to Extend Spacecraft's Life