For the first time in 27 years, U.S. produces plutonium-238 to power space missions by Alan Boyle on December 22, 2015December 22, 2015 at 11:07 am After a 27-year gap, the U.S. Department of Energy has resumed producing plutonium-238, the radioactive fuel that powers NASA’s Curiosity rover on Mars and the New Horizons mission to Pluto… Read More