The plutonium-244 hints at how heavy metals form in stars. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A rare version of the radioactive ...

WASHINGTON (Reuters) -The Trump administration plans to make available about 20 metric tons of Cold War-era plutonium from dismantled nuclear warheads to U.S. power companies as a potential fuel for ...

Two conflicting developments arose this month in US efforts to produce new plutonium pits for its nuclear weapons: The National Nuclear Security Administration (NNSA) announced it had produced a ...

Unlike its adversaries, the United States is currently lacking a viable capability to produce plutonium pits for its nuclear warheads. The long-term plan to develop the capability over the next decade ...

Multi-day fast-spectrum reactor experiments at the U.S. Department of Energy’s National Criticality Experiments Research Center generate modern benchmark data. The data supports Oklo’s ...