What seems to be missed on these answers is our motion through spacetime. Spacetime is the "web" of both space and time. Our galaxy is hurdling through the universe at tens/hundreds of thousands of mph as we are also hurdling through time, - and again space and time are part the same "matrix". So we are constantly hurdling through spacetime, and that is why when mass compresses and curves spacetime, we have a tendency to "move" toward mass. There is no such thing as a force of gravity, it is not a force, it is an observed effect. We feel as if we are constantly being pushed to the ground because of us flying through space and time so fast, and that spacetime that we are flying through is curved toward the mass of the earth. Actually, the earth is pushing, and exerting force on us.