Highest man-made temperature
On 13 August 2012 scientists at CERN’s Large Hadron Collider (LHC), Geneva, Switzerland, announced that they created a quark-gluon plasma with a record-smashing temperature of 5.5 trillion K.
The team had been using the ALICE experiment, that is focused on studying the QCP and other conditions in the primordial universe, to smash together lead ions at 99% of the speed of light to create a quark gluon plasma. It is believed that up to a few milliseconds after the Big Bang, the Universe was in a quark–gluon plasma state, which is an exotic state of matter. It is thought quark–gluon plasma consist of asymptotically free quarks and gluons.
See also: Lowest man-made temperature