Completing the construction and outfitting of a facility for training the operators who will produce plutonium pits at the ...

Add Yahoo as a preferred source to see more of our stories on Google. A person reflects in the window of the U.S. Department of Energy, with the official portrait of U.S. President Donald Trump on the ...

Spacecraft have used a plutonium isotope to stay afloat for decades, but another isotope could last even longer.

NASA’s most ambitious deep-space missions rely on plutonium to generate power where solar energy stops being practical. But ...

Newly released memo urges Los Alamos to accelerate plutonium pit production as critics raise safety and environmental ...

WASHINGTON — NASA is facing the prospect of trying to explore deep space without the aid of the long-lasting nuclear batteries it has relied upon for decades to send spacecraft to destinations where ...

The Nuclear Nonproliferation Treaty (NPT), whose tenth review conference is coming up in August, is in trouble, and not only because of the crescendo of complaints about the failure of the ...

In 1977, the Voyager 1 spacecraft left Earth on a five-year mission to explore Jupiter and Saturn. Thirty-six years later, the car-size probe is still exploring, still sending its findings home. It ...

No names. No pictures. No direct conversation. And don't touch the plutonium. Those were the ground rules before NPR was allowed a rare opportunity to see nuclear inspectors learning their craft. The ...

WASHINGTON (Reuters) -The U.S. Department of Energy expects to begin announcing by December 31 which companies will take about 19.7 metric tons of surplus Cold War-era plutonium for eventual ...