For historical reasons, plutonium brings to mind nuclear weapons. Jan Hartmann brings another side of element 94 to attention, which features an upcoming trip to its eponymous celestial body.

Russian President Vladimir Putin announced earlier this month that he is scrapping a treaty with the United States for the disposal of weapons-grade plutonium. Two days later, Moscow suspended a ...

TOKYO, Jan 28: Enough plutonium to produce 25 nuclear bombs is unaccounted for at a Japanese nuclear facility, but the deficit is mostly due to measuring shortcomings and miscalculations, an official ...

Plutonium is a radioactive chemical element, with the symbol Pu and atomic number 94. It is a heavy, silvery metal that becomes opaque when it oxidizes. The most important isotope of plutonium is ...