The milestones just keep coming over at the Large Hadron Collider. The latest: CERN researchers have glimpsed for the first time the so-called quark-gluon plasma that existed in the early universe before things cooled enough for neutrons, protons, and all the matter in the universe as we know it to form. Via heavy lead ion collisions underway at the LHC over the last month, researchers have recreated the conditions in the universe just a billionth of a second after the Big Bang. The results – publishing in the journal Physics Review Letters – come just three weeks after CERN researchers began circulating heavy ions through the LHC, an impressively swift feat by just about any scientific standard. In some respects, researchers found just what they thought they might by creating these mini Big Bangs: quarks and gluons unbound, roaming freely in a sort of subatomic soup. But the way they are observing this quark-gluon plasma is revealing new phenomena for the first time as well.

CERN/ALICE