NASA Lifts Ban On Radioactive Batteries Powered By Plutonium For Mission Proposals

For crucial space missions, NASA will very rarely create a power source from plutonium-238, which it has only a limited supply of. This, for the uninitiated, is a very rare radioactive metal — so rare that NASA banned the use of radioisotope thermoelectric generators for scientists who want to submit proposals for space missions.

Until now, that is. Read more.

Tags: Radioisotopes