© ATLAS Experiment, CERN.
Particle accelerators such as the LHC smash particles together at high energies, producing a wide variety of different collision fragments. Although the collision energies obtained in the LHC are far from the Planck scale, a good theory of quantum gravity must correctly predict the probability of different particles being produced in the collisions. The image shown here is a simulated event in the ATLAS detector, in which a miniature black hole is produced and immediately decays into a multitude of other particles. (Unit: 4)