It is postulated that the vacuum of space is filled with a dynamic primordial aether; boson particles moving at the speed of light, forming a tensor flux of spin=2 massless bosons. Each aether particle consists of two destructively interfering spin=1 bosons. This dynamic aether is compatible with known concepts of spacetime, and further leads to an understanding of the unstoppable arrow of time, and the mechanisms that slow clocks at velocity or in a gravity well. Mass, energy and momentum is understood, Fermions that interact with the aether gain the property of mass. From the well-known equation E=mc2, E is seen as only the portion of aether that interacts with mass. When a mass is set in motion, the aether bosons traversing an object is perturbed to not only reflect its energy and momentum, but the aether also perpetuates the motion. Further, an equivalence exists; a mass which finds itself in an asymmetric aether, is driven by the aether toward a constant velocity. This may lead to further investigations into the mechanics of gravity.