THE COSMIC FABRIC THEORY III: REPLACING SPACETIME CURVATURE AND DARK MATTER HYPOTHESIS WITH FLUID VORTEX AND COSMIC STRESS MODELING IN BINARY STAR SYSTEMS AND GALACTIC CORES

Modern astrophysics remains limited by a methodological dependency on observable matter and light within the electromagnetic spectrum, leading to the erroneous assumption that space is an absolute geometric vacuum. This abstraction forces cosmological equations, when reversed chronologically, into the non-physical paradox of a "Singularity" and requires abstract patches like "Dark Matter" to salvage galactic rotation curves. This paper presents the third phase of The Cosmic Fabric Theory, a static and fluid universe model composed of a non-vacuumable, fundamental simple substance. The general relativistic analogy of "spacetime warping" is rationally challenged through the orbital mechanics of equal-mass binary star systems revolving around a mass-free, empty barycenter. In these asymmetric systems where the warped-sheet geometry fails, it is demonstrated that the stars warp the fluid medium via their own motion, creating a Cosmic Vortex. The centripetal adherence counteracting centrifugal force is shown to be driven by a localized low-pressure gradient (\(\Delta P\)) at the vortex core, paired with the mechanical pushing force of the surrounding static cosmic fabric. Furthermore, the flat velocity profiles of stars at galactic boundaries and the long-term structural integrity of spiral arms are explained by viewing galaxies as macro-vortices inherent to the fabric's own dynamics, rather than isolated structures bound by a "Stationary Dark Matter Halo." This co-rotation mechanism mathematically eliminates hydrodynamic shear resistance (\(\Delta V \to 0\)), resolving the friction paradox. Finally, Cosmic Stress Points and localized energy peaks resulting from universal fluid turbulence are formulated as temporal observation criteria for future astrophysics.