Xenon 100 is an underground detector of dark matter in Italy. "Matter" particles may have "force" particle counterparts. By this logic, the "force" particle photon has a "matter version" counterpart called a photino. br Morgan Freeman explains, "Every neutrino seen so far has been left-handed!" Gravitational lensing (bending of light) around the Bullet Cluster are the best evidence as of 2014 for the existence of dark matter; the Musket Ball Cluster is older. br Mirror matter particles are complementary to ordinary matter. Robert Foot thinks mirror matter is dark matter. The anomaly in the shape of the cosmic microwave background has been called the "axis of evil". br br Thanks for watching. Follow for more videos.