Simulating the Universe with a zBox

An anonymous reader writes "Scientists at the University of Zurich predict that our galaxy is filled with a quadrillion clouds of dark matter with the mass of the Earth and size of the solar system. The results in this weeks journal Nature, also covered in Astronomy magazine, were made using a six month calculation on hundreds of processors of a self-built supercomputer, the zBox. This novel machine is a high density cube of processors cooled by a central airflow system. I like the initial back of an envelope design. Apparently, one of these ghostly dark matter haloes passes through the solar system every few thousand years leaving a trail of high energy gamma ray photons."

Comments

Re:Dark matter passing through the solar system

[flyingsquid]

So one of these dark matter clouds may pass through the solar system every few thousand years? Have they taken the next step and hypothesized that such an event could account for major climate changes? Like the event that killed off the dinosaurs?

It'd be interesting if these things could be tied to mass extinctions, but these occur much more rarely than every few thousand years. And unless these clouds can account for high levels of iridium, shocked quartz, melt glass, and a hundred-mile impact crater in Mexico, it's not terribly likely they account for the dinosaur extinction.