Albert Einstein imposed an observer-based epistemology upon physics. Relativity and Quantum Mechanics limit physics
to describing and modeling the observer's sensations and measurements. Their "underlying reality" consists only of ideas
that serve to model the observer's experience. These positivistic models cannot be used to form physical theories of
Cosmic phenomena. To do this, we must again remove the observer from the center of physics. When we relate motion
to Cosmic space instead of to observers and we attempt to explain the causes of Cosmic phenomena, we are forced to
admit that Cosmic space is a substance. We need a new physics of space. We can begin by replacing Relativity with a
modified Lorentzian-Newtonian model of spatial flow, and Quantum Mechanics with a wave-based theory of light and
electrons. Space physics will require the reinterpretation of all known phenomena, concepts, and mathematical models.