If a test body radially approaching a static point mass at near-c speed undergoes the same attractive gravitational acceleration as a nonrelativistic test body, its speed soon exceeds c. That doesn't occur because Einstein's gravitational acceleration by a static point mass is velocity-dependent; it counterintuitively repels a test body traveling radially at a speed sufficiently near c. Indeed, a basic feature of the gravitational refraction of light is that a radially-traveling light packet's speed increases monotonically toward c with its increasing radial distance from a static point mass, so a light packet traveling radially away from a static point mass is gravitationally accelerated toward radial speed c in the outward direction of its travel. Likewise, a test body traveling radially away from a static point mass at a speed sufficiently near c is counterintuitively gravitationally accelerated in the outward direction of its travel. The universe expands radially at a speed sufficiently near c to undergo such a counterintuitive gravitational acceleration in the outward direction of its radial expansion, "dark energy" isn't needed.