The picture has been widely shared for years and purportedly shows the aftermath of the explosion in the Japanese city.

So why not the atomic bomb? Nazi Germany ... end of the year the physicist Werner Heisenberg had calculated that nuclear fission chain reactions might be possible. When slowed down and controlled ...

Rolls-Royce has won a £9bn contract to upgrade submarine nuclear reactors. The firm will also build reactors for new ...

The first fission reactor was designed to make the most powerful bomb ever created. Created in secrecy and known as the Manhattan Project, the nuclear fission "atom bombs" were used successfully ...

A military plane was carrying the weapons when it exploded over a rural area, killing three people and sending the bombs ...

On Earth, nuclear fusion has been harnessed for thermonuclear weapons like hydrogen bombs ... Nuclear fission involves splitting a heavy atomic nucleus into smaller nuclei and releasing a ...

Since mid-2019, Iran has significantly shortened its “breakout time”—the amount of time needed to produce enough weapons-grade highly enriched uranium (HEU) to build a nuclear weapon to mere days. How ...

Fission weapons split atoms of unstable ... This is not actually a nuclear bomb that involves an atomic chain reaction. Instead, it is a conventional explosion, as small as a stick of dynamite ...

This fusion reactor recently maintained a super-hot plasma for over 1,000 seconds, surpassing its previous record of 403 ...