This time on Radio Physics, intern Henry Billinghurst talks with theoretical physicist Krishna Rajagopal, exploring one of the most extreme states of matter in the universe: “hot quark soup,” or quark–gluon plasma and how scientists recreate this early-universe matter using powerful particle colliders to briefly produce tiny droplets of this ultra-hot, liquid-like plasma. They discuss the physics of the early universe, the behavior of matter under extreme conditions, and how modern experiments help us understand the origins of everything around us. Listen to Radio Physics on KDNK.org every third Wednesday at 4:30pm.