Gravity is Pressure, not spacetime curvature, and not an intrinsic mass property. For over a century, astrophysics has been hindered by the attempt to calculate a fundamentally dynamic Universe using static equations. Sir Isaac Newton relied on static formulas to describe mass attraction, and Albert Einstein's geometric spacetime curvature in General Relativity is challenged by the fluid-dynamic framework presented in the Marabūt's Theory of Gravity series. The Electron Flow Model (EFM) stands as a generative framework to successfully replace classical geometric gravity by establishing one fundamental law: Gravity is Pressure, not spacetime curvature, and not an intrinsic mass property. By analyzing the vacuum of space as a dense medium of electron flux, we demonstrate that celestial cores act as oversaturated negative sinks. The violent rejection of excess electrons from the core creates a continuous outward wave of atomic structural voids, a Positive Pressure Cascade. As ambient interstellar electrons rush inward to fill these voids, they physically strike the atomic lattice. This continuous, microscopic kinetic strike provides the macroscopic mechanical pressure we call "gravity". Unlike legacy physics, which calculates the geometric curvature of an empty void, the EFM stands as a generative quantum gravity framework capable of calculating the exact thermodynamic drag of a physical fluid at any coordinate in the universe. Redefining gravity as a physical, thermodynamic circuit rather than a geometric illusion provides the necessary mechanical framework to develop Advanced Gravitational Technologies, ensuring the preservation of Earth and humanity's expansion into the stars. The Unified Fluid Cosmos Framework: This paper serves as Manuscript 5 Version 1 in the comprehensive series, Marabūt's Theory of Gravity. It presents the Electron Flow Model (EFM), a generative, fluid-dynamic framework designed to fundamentally replace General Relativity. The EFM shatters classical circularity with a single, undeniable foundational premise: Gravity is Pressure, not curvature, and not an intrinsic mass property. Published Manuscripts in this Series: Manuscript 01: The Push-Pull Mechanics of Vacuum Flux (The Foundational Framework) — https://doi.org/10.5281/zenodo.20126552 Manuscript 02: Resolving the Weyl Potential Anomaly — https://doi.org/10.5281/zenodo.20127273 Manuscript 03: Mechanistic Resolution of Jet Deflection in Cygnus X-1 — https://doi.org/10.5281/zenodo.20128198 Manuscript 04: Quantum Mechanics of Stellar Chain Reactions and EVGS Formation — https://doi.org/10.5281/zenodo.20070275 Manuscript 05: The Heliospheric Grand Data Matrix (Current Paper) — https://doi.org/10.5281/zenodo.20128777 Data & Code Availability: To accompany this manuscript, we have open-sourced the complete Python mathematical engine and a fully interactive 3D web-based simulation of the EFM Volumetric Profiler. Researchers, developers, and students can visually explore the hydrodynamic vacuum flux across the celestial bodies at: Interactive 3D EFM Volumetric Profiler: https://marabutmarabut.github.io/Theory-of-Gravity Official GitHub Repository: https://github.com/MarabutMarabut/Theory-of-Gravity
Marabūt et al. (Mon,) studied this question.