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

"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 ...

The so-called Demon Core was a cursed object, a 6.2 kilogram mass of plutonium intended to be installed in a nuclear weapon. Instead, slapdash experimental techniques saw it feature in several ...

Each spacecraft’s plutonium core produces a little less juice each year, however—annually losing about four watts, equivalent to a low-power light bulb. The spacecraft’s computer ...

This image from 1945 shows Manhattan Project physicist Harold Agnew smiling and holding the plutonium core of one of the world's most devastating weapons. Weighing 14 pounds and responsible for ...

In 1946, a P-239 plutonium core scheduled for detonation-by-nuclear-bomb was harmlessly melted down and reintegrated into the United States’ nuclear stockpile. That was the end of a 14-pound ...

So, the question remains, where did the “weapons grade plutonium” come from ... there exists a secret nuclear reactor and a reprocessing facility able to produce the core ingredient for a nuclear ...