Is gravity, in sense of pressure, strongest in center of objects like planets, stars, BH, galaxies? If all atoms attract each other then center cannot be it, right? If you had a hole in center of Sun (hypothetically) and put there a little ball, would that ball get crushed, torn apart or just stay there unaffected because gravity cancels itself out in centre? So, wouldn't an object feel greatest pressure somewhere half way to the centre? If this holds for a star, what about a galaxy, if same logic applies why would galaxies have most massive black hole in their center rather say half way there?