True, but we can see galaxies that are already over the "light horizon." In other words, we can see light emitted from those galaxies when they were within the

True, but we can see galaxies that are already over the "light horizon." In other words, we can see light emitted from those galaxies when they were within the light horizon (the point where they were receding from us at less than c), and that light has a causal effect on us. Light emitted from the galaxy now, however, will never reach us because it is already receding from us faster than the speed of light.