"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 ...

So why not the atomic bomb? Nazi Germany ... an element roughly half the size of uranium. Their former colleague Lise Meitner, who a few months before had been forced to flee Germany and seek ...

Edgar Hoover shows the F.B.I. discussing limiting the size of ... its first atomic weapon in 1949, American security officials began secret studies of the threat from a smuggled bomb.

The lives of two atomic bombing survivors have become unexpectedly linked through the rescue of a life-size model of the bomb dropped on Hiroshima that was bound for the junkyard. When Hiroshi ...

"It is," the observer assured him. The bomb had in fact yielded 20 kilotons, making it about the same size as Trinity, the first U.S. atomic test. Two months later the scientists principally ...