Photo: Atomic bomb test explosion in Alamagordo ... a new element at all but might have actually split the uranium atom in two -- at that point a barely imaginable event. Before they could ...

After the first atomic bomb explosion (seen here from 10,000 yards away, in a time series from .006 seconds to .081 seconds after detonation), Oppenheimer recalled, "a few people laughed ...

In 1958, a U.S. B-47 fighter jet accidentally dropped an atomic bomb over South Carolina, but fortunately, the nuclear ...

The US nuclear attacks remain the only ones ever recorded. The exact number of victims exceeding hundreds of thousands could never be determined given radiation's long-term effects that kept ...