In 1962, at the height of the Cold War, the United States launched a nuclear weapon high above the Earth and detonated it in ...

Space-based nuclear weapons are a serious matter, and one that deserves the very highest level of national attention.

When a nuclear accident happens, it’s vital that scientists have accurate fallout models.

Imagine a 150-kiloton nuclear bomb exploded in the city closest to you. Do you know how the city, its surrounding region, and its inhabitants would be affected? If you can't think of much more than "a ...

On August 6, 1945, the US bomber Enola Gay dropped the first atomic bomb ever used in military combat on the Japanese city of ...