I wonder if its a result of the topography of spacetime? Like, if we were to assume the universe is toroidial, and then superimpose a coordinate system over the torus where each point on the grid is one Plank-legnth from its neighbors, I wonder if the distance between grid squares would look bigger at the outside edge of the torus than in the central funnel? If Earth were near the center, then when we look outward/backward we'd observe objects apparent acceleration outward even though from the perspective of those objects themselves they are jumping from grid square to grid square at a constant rate.