Kinetic Flux Gravity: Beyond Dark Matter and MOND

This preprint presents Kinetic Flux Gravity (KFG) — a phenomenological alternative to the Dark Matter hypothesis and Modified Newtonian Dynamics (MOND) for stable rotating systems. The model bypasses geometric spacetime curvature and acceleration-based thresholds by treating gravitation as a dynamic, radial flux of discrete momentum carriers propagating at the speed of light. By calculating the kinematic interaction of an orbital body intercepting this material flux, the model establishes a unified, two-component circular velocity equation that resolves anomalies across two distinct scales: The Planetary Scale: It accounts for the 43″ secular precession of Mercury's perihelion via a velocity-dependent retardation correction (the Weber-Gerber component), operating independently of General Relativity. The Galactic Scale: It accounts for flat rotation curves and satisfies the baryonic Tully-Fisher relation by utilizing a macroscopic non-monotonic trigger function, which models a statistical transition in the flux-interception regime. The key feature of the KFG model is its predictive capability. When verified against a diverse sample of 20 real disk galaxies from the independent SPARC database, the equation accurately determines baryonic masses across four orders of magnitude using a single set of fixed universal constants, requiring zero individual or case-by-case parameter tuning.