Inside History on Instagram: "During the Chernobyl disaster, the reactor’s fuel rods were central to how a routine safety test spiraled into catastrophe! When operators improperly shut down the reactor, its power unexpectedly surged. Control rods with graphite tips were inserted to halt the reaction, but a design flaw caused a brief increase in reactivity instead of an immediate decrease. This sudden spike overheated the fuel rods, causing them to rupture and rapidly turn surrounding water into