Many researchers have looked for a possible variation in the strength of gravity, without success. Some feel that stronger gravity in the distant past might possibly have helped trigger star formation or the Big Bang itself. Gravity therefore does not solve the problems of Big Bang cosmology. Aside from air resistance, large and small objects fall downward in exactly the same time. Drop two compact objects and you should see and hear them hit the floor simultaneously.
Gravity is always attractive, while other forces such as magnetism can either repel or attract.
Even the distant galaxies, which appear to have been created with an outward expanding motion, are gradually slowing due to the inward gravity pull from all other galaxies in the universe. Gravity cannot be fumed off or shielded in any way. Intervening objects have no effect on the original gravity force between two separated masses. This means that there is no antigravity chamber available in which the occupants can continually float freely. The weightless, gravity-free feeling you may have experienced on an amusement park ride results from a temporary falling motion.