Dark matter is the most abundant substance of the universe. It is any physicist’s nightmare, because it is the most ungraspable of the universe. Scientists at the Gran Sasso have observed traces of it and this discovery may lead them to a Nobel. If there is any chance of capturing some fragment , the right place to try is in the heart of a mountain. Neons alone illuminate this place pervaded by a constant buzz of ventilation systems. Four teams are competing to be the first. CoGeNt, Dama, Cresst and Warp. Hunters that are determined to photograph a Wimp (weakly interacting massive particles), the building block of dark matter.
