In Quantum Relativity, time and space are separated. Time is the numerical order of material changes, and space is the medium, in which these changes take place. Space has the origin in a three-dimensional quantum vacuum defined by fluctuations of the energy density corresponding to elementary RS (reduction state) processes of creation/annihilation of elementary quanta. Quantum Relativity provides a unifying approach to special relativity, general relativity, and quantum mechanics. Each physical object from the micro-to the macroscale can be derived from an opportune diminishing of the quantum vacuum energy density. In particular, the variable energy density of space in Quantum Relativity corresponds to the curvature of space in general relativity. In quantum theory, the behavior of each subatomic particle follows from opportune elementary RS processes of creation/annihilation of quanta guided by a quantum potential of the vacuum. Finally, the perspectives of this model regarding the view of gravity and quantum as two aspects of the same coin and the electroweak scale are analyzed. K e y w o r d s: mass, gravity, General Relativity, Quantum Relativity, quantum vacuum, quantum mechanics, Standard Model.c ○ D. FISCALETTI, A. SORLI, 2018void theoretically of all fields, elementary particles, and massive objects, still exists on its own and so must have some specific physical origin. The so-called "empty space" is a type of energy that is "full" of itself and has its independent physical existence. We explored recently this possibility by introducing, on the basis of the Planckian metric emerging, for example, from loop quantum gravity [1-3], a model of a three-dimensional (3D) dynamic quantum vacuum, which can create a bridge between quantum mechanics and general relativity. In this model, the background space of physical processes is a 3D quantum vacuum, where each elementary particle is determined by elementary reduction-state (RS) processes of creation/annihilation of quanta (more precisely, of virtual particle-antiparticle pairs) corresponding to opportune changes of the energy density of space [4,