Many scientists say “subcritical” experiments and computer simulations make nuclear weapons testing unnecessary.

Plutonium discovered at the bottom of the ocean was found to be refuse from a kilonova that exploded close to Earth 10 ...

July 16, 1945, marked a turning point in history with the first nuclear test, named Trinity, in the New Mexico desert in the ...

Do we live in a supernova graveyard? A team of researchers proposes that 10 million years ago two giant neutron stars crashed ...

On July 13, 1945, at a site called Trinity 100 km northwest of Alamogordo, a plutonium bomb was assembled and brought to the top of a tower. The test was postponed by thunderstorms. On July 16 ...

"Gadget," the first atomic bomb — a 6-foot sphere with a grapefruit-sized Plutonium core, covered in cables — was born out of the Albert Einstein-inspired Manhattan Project, and was detonated ...

Deep-sea samples reveal traces of past cosmic explosions, prompting researchers to seek further proof in lunar soil.

Since the first nuclear explosion in history during the Trinity test in 1945, nuclear weapons have significantly shaped the ...

The fissionable substance in the French bomb was plutonium. The French have been producing plutonium since 1948, now get their supply from three reactors located at Marcoule, near Avignon in ...

A wildlife corridor plans to connect two Superfund sites at the former Rocky Flats plutonium plant and the Rocky Mountain ...

Beginning in the late 1950s, the U.S. met this challenge by developing nuclear batteries known as radioisotope thermoelectric generators (RTGs) and producing plutonium-238 (Pu-238) as their fuel, ...