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Physicists Search For Dark Matter Deep In Minnesota Mine
ScienceDaily (Mar. 6, 2008) — A half-mile down in an old iron ore mine in Minnesota, incredibly sensitive detectors have been waiting for a particle of dark matter, an invisible substance that may form the skeleton of galaxies, to make itself known.
WIMPs are leading candidates for dark matter, the unseen stuff that accounts for 85 percent of the entire mass of the universe. Billions of WIMPs may be passing unnoticed through the bodies of humans every second.
So the Cryogenic Dark Matter Search, which started out in an underground tunnel at Stanford before moving to the Soudan mine in Minnesota, will next move to a deeper site at Snolab in Canada. The detectors will grow from 3.7 kilos of germanium to 25 kilos.
With a larger detector, as with a wider telescope, "You will be able to see things you've never been able to see before," Cabrera said.