An end-on view of one of the first full-energy collisions between gold ions at Brookhaven Lab's Relativistic Heavy Ion Collider (RHIC), as captured by the Solenoidal Tracker At RHIC (STAR) detector. The collisions create a quark-gluon soup that reproduces the state of the universe less than 10 microseconds after the Big Bang. The tracks indicate paths taken by thousands of subatomic particles produced in the collisions as they pass through STAR's 3-D digitial camera.