shockwaves
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Optical laser uses shockwaves to peer inside distant planets
Scientists at SLAC's National Accelerator Laboratory are able to peer even further into space thanks to an improved optical laser. The laser uses shockwaves to create high pressure conditions in materials, and the material's response is then captured by an ultra-bright X-ray laser, revealing what's going on inside planets and meteors. Upgrades to the optical laser means it's now three times more powerful, with the equivalent power of 17 Teslas discharging their 100 kilowatt-hour batteries in a single second.
GPS stations trace nuclear explosions, summon end to underground mushroom clouds?
A team of researchers recently revealed findings that could turn GPS stations into tools for detecting illegal nuclear explosions. According to a report, being presented to the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) this week, the group found that nearby GPS stations showed a change in ionospheric electron density, following a 2009 nuclear test performed by North Korea. That discovery led to the realization that the same technology we use to track everything from dogs to children can more accurately detect nuclear explosions -- even when they take place underground. By measuring the time it takes for a resulting shockwave to reach and affect surrounding stations, researchers can accurately determine the origin of the blast. The team is currently seeking funding to further its explosive (sorry, we had to) research.
Atomic bomb tests make for pretty, if unnerving, photography
The things America got up to in the 50s, eh? The New York Times has this week published a gallery of arresting images from atomic bomb testing done by the US military in the middle of the 20th century. From nuking its own destroyers and airships while gauging out their "vulnerability" -- let's hope that vulnerability was categorized as "total" -- to producing atomic cannons like the one you see above, the USA really went to town with its nuclear warfare practice. The Times' story is about atomic cameramen and the crazy risks they took to document these events; we'd advise giving it a read, but if you're pushed for time, just hit the source for all the wild visuals.
