Joint venture

September 9th, 2014
The multiple components of a nuclear weapon body are highlighted in this intentionally simplified mesh. Each part is comprised of numerous subcomponents, fastened together with screws, nuts, bolts, jar-lid-like fittings and more. (Sandia National Laboratories.)

Sandia National Laboratories investigators turn to advanced modeling to test the reliability of the joints that hold nuclear missiles together.

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Life underground

August 19th, 2014
Water_cover

A PNNL team builds models of deep-earth water flows that affect the tiny organisms that can make big contributions to climate-changing gases.

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Supernova shocks

May 6th, 2014
In this false-color image, NuSTAR data, which show high-energy X-rays from radioactive material, are colored blue. Lower-energy X-rays from non-radioactive material, imaged previously with NASA’s Chandra X-ray Observatory, are shown in red, yellow and green. (NASA/JPL-Caltech/CXC/SAO.)

More than 10 years after simulations first suggested its presence, observations appear to confirm that a key instability drives the shock behind one kind of supernova.

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