A strength test for the strong force

New research could tell us about particle interactions in the early universe and even hint at new physics. Much of the matter in the universe is made up of tiny particles called quarks. Normally it's impossible to see a quark on its own because they are always bound tightly together in groups. Quarks only separate in extreme conditions, such as immediately after the Big Bang or in the center of stars or during high-energy particle collisions generated in particle colliders. Scientists at Louisia...