The relationship between the expansion of the universe and the gravitational pull of the Great Attractor is a balance of opposing forces. Dark energy acts as a repulsive force that accelerates the expansion of space itself. In contrast, the Great Attractor is a massive gravitational anomaly that exerts a powerful pull on nearby galaxies, including our own Milky Way.
On a local scale, gravity is much stronger than the effects of dark energy. Within clusters of galaxies, the gravitational pull is strong enough to keep structures bound together despite the expansion of space. However, on a cosmological scale, dark energy dominates. As the universe continues to expand, the distance between distant galaxy clusters increases. While the Great Attractor continues to draw our local group toward it, dark energy ensures that the space between us and much more distant regions is stretching at an accelerating rate.
In short, dark energy does not stop the Great Attractor from pulling on us, but it prevents that pull from affecting the entire universe. Gravity wins locally, while dark energy wins on a cosmic scale.
