It is revealed that an underground experiment deep in the Soudan mine in Minnesota, US, may have discovered a type of dark-matter particle.

As per the report in Nature News, the huge Cryogenic Dark Matter Search (CDMSII) experiment contains a rack of super cooled hockey-puck-sized silicon and germanium detectors nestled within Russian-doll layers of shielding.

The dark colored matter is cited to form 85% of the mass in the Universe, however, has not been detected directly - quite.

Just near from the CDMSII experiment, across the subterranean cavern, there is a smaller box that is thickening the dark-matter plot.

The box is reported to contain a single germanium hockey puck, similar to those in the CDMSII experiment but operated by the Coherent Germanium Neutrino Technology collaboration and tuned to detect incoming particles with much lower masses than the CDMSII.

The recent data pin points to a WIMP with a mass bracketed in 7-11 billion electronvolts.