Eight of the world’s nine nuclear powers detonated a device before anyone called them nuclear powers. The ninth is Israel, and its case has gone unresolved for 47 years. Iran has detonated nothing.

Confusion on whether Iran truly needed only “two weeks to four weeks” to make a nuclear weapon, as President Donald Trump suggested on Monday, hangs over the ongoing U.S. and Israeli war on the ...

Nuclear reactors and atomic bombs both rely on nuclear fission, but does that mean that a reactor could turn into an atomic ...

The printing press, the lightbulb, the internal combustion engine and the computer moved the world into a mostly better ...

Add Yahoo as a preferred source to see more of our stories on Google. The only well-exposed color image of the Trinity test. (Jack W. Aeby/Manhattan Project/Public Domain) We don't always get to ...

Iranian authorities accused the United States of striking a nuclear power plant under construction in the country's southwest as fighting between the warring sides flared up again in July 2026, but a ...

In 1957, scientists detonated a nuclear bomb under the Nevada desert — and launched a steel manhole cover at unimaginable speed. Some say it reached space, beating Sputnik by months. This video ...

Instead of scrapping its network of bomb shelters after the Cold War, Switzerland kept building them. The country has more ...

Explore 20 vintage photos from the age of nuclear testing, capturing test explosions, military preparations, scientists, and ...

We don't always get to pinpoint the exact moment the world changes. But when the New Mexico dawn was torn open at 5:29 am on 16 July 1945, it was, without a doubt, a pivotal moment in humanity's ...