When an atom breaks apart, it gives out energy and more neutrons, which can then split other atoms. Get enough atoms splitting and you have the chain reaction needed for a bomb blast ...

There are three natural isotopes of uranium — uranium-234 (U-234), uranium-235 (U-235) and uranium-238 (U-238). U-238 is the most common one, accounting for around 99 per cent of natural uranium found ...

It takes approximately 4.5 billion years – roughly the life of the Earth – for half of a given quantity of uranium-238 to decay into other elements.

Destroying Iran's stores of enriched uranium would bring danger for people nearby but not trigger another Chernobyl.

A highly coveted children's toy from the 1950s is going on sale—and it contains real uranium. The Gilbert U-238 Atomic Energy Laboratory, which was released in 1950, was dubbed one of 'the 10 ...

Uranium decay series. Adding a neutron to uranium-238 in a reactor “breeds” plutonium-239. The process of creating 239 Pu from uranium is called “breeding.” ...

Although natural decay of U-235 means that this is unlikely to happen again, we humans have learned to take uranium ore and start a controlled fission process in reactors, beginning in the 1940s.

In fact, we notice that natural radioactive isotopes with the decay periods of many thousand million years (such as uranium-238, thorium-232 and samarium-148) are comparatively abundant, whereas ...

Uranium-238 (U-238) is the most abundant isotope of uranium, making up about 99.3% of natural uranium. A different isotope, ...