We're doing that. Production of Pu238 (the RTG isotope) is being restarted. http://www.universetoday.com/100875/u-s-to-restart-plutonium-production-for-deep-sp

We're doing that. Production of Pu238 (the RTG isotope) is being restarted. http://www.universetoday.com/100875/u-s-to-restart-plutonium-production-for-deep-space-exploration/ http://www.universetoday.com/100875/u-s-to-restart-plutonium...