Exploring the vast dark universe

Only a tiny fraction of the matter in our universe is visible; everything else is dark. Dark matter is so shy that we only know it exists because of its ostensible gravitational tugs on celestial bodies. Physicist Laura Baudis from the University of Zurich explains the history of dark matter research and how scientists are hoping to uncover its mysterious properties by trapping, tracking or even creating it by using the world’s best tools.