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The Jupiter Icy Moons Orbiter (Jimo) is part of an ambitious mission to explore the three planet-sized Jovian moons Callisto, Ganymede and Europa. Designing the spacecraft poses a significant engineering challenge given the long distances involved. Controversially, the probe is to be powered by a nuclear propulsion system. Callisto, Ganymede and Europa are thought to harbour oceans of probable water beneath an icy crust. Jimo would be the...

North Korea has threatened to carry out nuclear missile tests unless the UN Security Council apologises for its condemnation of a recent rocket launch.

When the world's most powerful laser facility flicks the switch on its first full-scale experiments later this month, a tiny star will be born on Earth...

What was once the most secret of all British government documents has been released in full. During the Cold War, civil servants used to rehearse the end of the world - what would happen if deterrence failed and nuclear war became inevitable.

E. Coli does more than just make people sick — it can also be used to clean up nuclear waste, according to researchers at Birmingham University. The research team found that E. Coli bacteria effectively breaks down phytic acid (a phosphate storage material found in seeds) and releases the phosphate molecules, which bind to uranium to create a uranium phosphate precipitate. The precipitate can be harvested to recover uranium, and voila – no...

The Large Hadron Collider (LHC) experiment has once again become one of the coldest places in the Universe. All eight sectors of the LHC have now been cooled to their operating temperature of 1.9 kelvin (-271C; -456F) - colder than deep space.

The director general of the United Nations nuclear watchdog declared in unusually blunt language on Thursday that Iran had stonewalled investigators about evidence that the country had worked on nuclear weapons design, and that his efforts to reveal the truth had “effectively reached a dead end.”