This session explores the almost unfathomable scales of theoretical physics, from the mysterious properties of dark matter to the depths of our universe and beyond. Experiments, like the Large Hadron Collider near Geneva that smashes together protons at high energies, tell us about the smallest length scales we can observe today while measurements of the universe stretch our observations of large length scales to their limits. Theoretical physicists like Lisa Randall tie the results of these experiments to mysteries about our universe. Professor Randall will tell us about the Higgs boson discovery and its implications. She will also explore possibilities for the nature of dark matter and of space itself. Can there be an unseen extra dimension in our universe? Theoretical physics truly knows no bounds.