Scientists at the Pierre Auger Cosmic Ray Observatory in Argentina recently tested the theory that governs the behavior of protons, the particles that collide in the Large Hadron Collider, at energies inaccessible at the LHC.
In the past year, scientists have bulked up their toolkits with new ways to tweak and study a state of matter 100,000 times hotter than the interior of the Sun – the quark-gluon plasma.