A growing number of conflicts within the Standard Model call into question the fundamental interpretation of the Doppler component of the putative Hubble Expansion Law and the nature of events in spacetime associated with conventional coordinates of the line element as attached to the physical basis of the observer. Also of paramount importance is that Einstein’s geometrodynamics is not a complete theory of gravity. We postulate that nonlinear effects associated with the propagation of light in an intense gravitational field produces shock waves creating ‘light-booms’ along boundary conditions at cosmological distances approaching the limit of observation that if correct would explain Quasi-Stellar Object (QSO) luminosity. These gravitational shock waves are considered observationally manifest in the spectrum of QSOs and Supernova as a continuous front of ‘light booms’ produced by superluminal boosts associated with continuous coordinate transformations relative to a distant observer. This model aligns with the view suggesting that QSOs are most likely a form of Seifert spiral galaxy with Active Galactic Nuclei (AGN) in the vicinity of the putative observational limit of the Hubble radius, HR.