Lets just pretend we have a spaceship traveling in the vacuum of space with no friction from space dust whatsoever. It accelerates at a meager 10m/s. Eventually in millions of years it will near the speed of light. If nothing can go faster than the speed of light than what prevents said...
If gravity is limitless, is it always increasing?
If its always increasing then how does it correlate with the idea that everything in the universe tends to strive towards equilibrium?
Does it change into one of the other fundamental forces?