Universe in a day

November 19th, 2014
A small subset of the particles from the Dark Sky Simulation Collaboration, showing a massive galaxy cluster at the center. Particles are colored by their incoming (blue) or outgoing (red) velocity with respect to the cluster. (See ihttp://darksky.slac.stanford.edu/halo_world.html.)

A team working on the Titan supercomputer simulates the biggest thing of all in a flash, then shares.


Back to the hydrogen future

October 8th, 2014
Liquid water molecules binding to a surface a promising photoactive system, called InP, for generating hydrogen using sunlight and water.

At Lawrence Livermore National Laboratory, Computational Science Graduate Fellowship alum Brandon Wood applies the world’s most sophisticated molecular dynamics codes on America’s leading supercomputers to model hydrogen’s reaction kinetics.


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.