Fluid Dynamics of Spacetime: Gravitational Currents as an Alternative to Dark Matter and Galactic Rotation

This paper proposes an alternative theoretical framework for understanding large-scale cosmic dynamics. We postulate that spacetime is not an inert void, but rather a fluid with an intrinsic and constant density (ρST). In this conception, moving mass and energy (described by the stress-energy tensor of General Relativity), by interacting with this dense medium and with a certain viscosity, exert a direct "traction" that generates macroscopic currents and flow patterns in the very fabric of spacetime (vST). We argue that these "gravitational currents" are the true agents behind the anomalous dynamics observed in galactic rotation curves, offering a unified explanation that eliminates the need to postulate the existence of dark matter.