Bulk flows and the Still Core

Standard cosmology predicts expansion plus gravitationally driven motions whose coherent flows fade on larger scales. Yet astronomers see bulk flows, coordinated migrations of thousands of galaxies, on scales larger than expected. The Great Attractor draws the Milky Way and its neighbors at hundreds of kilometers per second, and Kashlinsky and collaborators report coherent motion across several billion light-years, though other analyses find no such flow, so that claim is disputed.

RSI explains these as galaxies falling along the large-scale pressure gradient of the universal toroidal engine. The medium circulates through the toroid in a closed loop, and like any circulating fluid it carries a pattern of pressure. Along the return side of the circuit, the pressure falls toward the Still Core. Galaxies are not carried by the medium, which pushes nothing along. They fall down this slope, just as they fall toward any pressure shadow.

Think of a ball rolling downhill across a contour map. The low ground does not pull the ball; the shape of the land organizes the motion. In the same way, the gradient organized the Great Attractor and the Shapley Supercluster. Neither created it. Because the gradient belongs to the shape of the whole toroid, it needs no hidden mass at its end and no endless flow of the medium.