Gases, as we all know, don’t generally offer a lot of resistance. That is, if you try to walk through a cloud of gas, you’ll pass right through it. The same is true for two clouds of gases that meet each other: they pass right through each other. But MIT physicists have observed the first exception to the rule by creating two clouds of ultra-cold gases that bounce right off each other like solids.
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.