The Atheist’s Guide to Christmas. Ariane Sherine

of large clusters of galaxies through the universe. Models of this missing stuff, known as Dark Matter, work best if the missing matter takes the form of an as yet undiscovered heavy sub-atomic particle. Within the MSSM, such a particle does exist, and if the model is correct then this particle and a whole new zoo of its sisters should show up at the LHC. Such a discovery would represent a giant leap in our understanding of the sub-atomic world and the evolution of the universe as a whole.