Physicists warn that deuterium-tritium fusion reactors could enable secret production of fissile materials, prompting calls ...

SEATTLE — New batches of plutonium-238 may become available to NASA starting in 2017, perhaps preventing feared shortages of this vital spacecraft power source. The United States has not produced ...

A federal facility that produces nonradioactive components for nuclear weapons is expanding in Kansas City. The big picture: ...

The National Nuclear Security Administration (NNSA) released its draft Programmatic Environmental Impact Statement (PEIS) for national production of up to 205 plutonium pits per year (ppy) on April 10 ...

Deep space exploration, in which spacecraft travel to the outer reaches of our solar system or beyond, requires a whole lot of power. For NASA, a valuable source of this power is a radioactive ...

Behind closed doors, Congress is in the process of making a decision that will have a profound impact on nuclear risk levels and global security. Hanging in the balance is a decision to recklessly ...

Voyages into space are among the most iconic endeavors of the 20th and 21st centuries. Spacecraft that have ventured out to this “final frontier” have relayed stunning images and enlightening ...

ALBUQUERQUE – The agency that oversees the United States’ nuclear arsenal says it doesn’t need to do any broad environmental reviews of a proposal that calls for ramping up production of plutonium ...

SPOKANE, Wash. -- Workers on a former nuclear weapons production site have started the first large-scale treatment of radioactive and chemical wastes from large underground storage tanks, a key ...

Russia announced that it had shut down the second of its three plutonium-producing reactors - the ADE-5 unit at Seversk - as part of a nuclear non-proliferation programme with the USA. Russia ...