Quark-Gluon Plasma, the Densest Form of Matter Ever Observed
The above image is a reconstruction of particle tracks captured in the STAR Time Projection Chamber during a Relativistic Heavy Ion Collider (RHIC) experiment that smashed Gold nuclei (which consists of 79 protons and 118 neutrons) together at nearly the speed of light, creating a fireball hot enough to melt protons and neutrons into a primordial superhot substance known as quark-gluon plasma.
The quark-gluon plasma, said to be the densest matter ever observed, is so hot it is more than a hundred thousand times hotter than the inside of the sun.
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