The Large Hadron Collider (LHC), the world's largest atom smasher, just discovered at least two previously unknown particles.
The 17-mile (27 kilometers) underground ring near Geneva recently discovered two baryons and a hint of another particle, according to a statement from the European Organization for Nuclear Research (CERN), which runs the LHC. Baryons are fundamental subatomic particles that are each made up of three quarks. The quarks, in turn, are even smaller particles that come in different "flavors": up, down, top, bottom, strange and charm.