<p>➀ The sPHENIX detector at Brookhaven National Lab's RHIC successfully conducted key tests to study quark-gluon plasma, a post-Big Bang state of matter;</p><p>➁ Initial collision experiments demonstrated precision in measuring particle yields and energy, validating its capability to analyze nuclear collisions;</p><p>➂ Upgraded hardware enables high-speed data capture, offering insights into the early universe's particle dynamics and matter formation.</p>