What is the maximum lethal range cited for a Gamma-Ray Burst (GRB) jet from a supernova?

~6,000 Light Years

Gamma-Ray Bursts (GRBs) are highly focused, powerful jets of energy associated with certain core-collapse events, often termed hypernovae. Because this energy output is concentrated into narrow beams rather than spread spherically like general supernova light, the intensity within the jet path is exponentially higher. This focused energy allows the lethal effects—primarily extreme ozone depletion leading to surface sterilization—to extend dramatically farther into space than other supernova hazards. The comparison data indicates that if Earth happened to be directly in the path of such a jet, the danger zone could extend up to approximately 6,000 Light Years, representing the largest potential threat radius of any listed component.