This theoretical academic article introduces the concept of the Social Black Hole within the framework of Social Relativity Theory (SRT) to explain the structural concentration of power, resources and influence in social systems. Drawing on structural analogies from gravitational physics, the study proposes that political authority, economic capital, social prestige and institutional networks accumulate as social mass, generating a social field that attracts individuals, resources and institutional connections toward the center of the system. When social mass reaches a critical threshold, the system may enter a condition referred to as a Social Black Hole, characterized by an intense concentration of power, reduced competition and increasing structural rigidity that limits internal transformation. The article further develops the concept of a Social Event Horizon, defined as the threshold at which the cost of exiting a system exceeds the potential benefits of withdrawal, effectively trapping actors within the gravitational field of institutional power. The study also explores dynamic processes including power evaporation, which refers to the gradual loss of structural mass through institutional decay, corruption leakage and the emergence of alternative social spaces. In addition, the concept of Social Time Dilation is introduced to describe how high concentrations of social mass slow the pace of innovation and structural change within large institutions. This framework provides a structural analytical model for understanding power concentration, institutional rigidity and systemic transformation in contemporary social systems.