Naeel

Thank you for answering. Shell produces zero gravity inside it's hollow when absolutely symmetrical and same thickness. Let's consider the point on the edge of the cavity. For it's gravity balance it is necessary to have the same cavity symmetrically located. If the second cavity is filled, it will have gravity. Which is equivalent to the fact that the hollow has the property of anti-gravity The same situation if the point is located inside the cavity (not in the centre, of course). But the cavity will not be whole ball shape, but bitten apple or the crescent

Hell-o ! First of all, sorry for my English, I hope you’ll understand the proposed idea. By Hubble’s law, the universe is expanding, the farther away the observed object, the faster. Like as some anti-gravitational forces exist. Anti-gravitation means objects with mass are PUSHED away. But – if some masses exist outside of our vision, that PULL ? By “regular” gravitation. Nice to name it as Universe Halo, but same computer game exists, so let’s call this far-far away area Hell-o (you will understand later why). Let's consider a sphere with a density lower than that of its surrounding infinity. It will behave as massive ball, but with anti-gravitation ! Same (with opposite force) as Earth gravitation – maximum on the surface, decreasing down to zero to the centre of the sphere. Here is calculation of anti-gravitational acceleration, r – is distance from “centre” of our universe ​ Calculation of acceleration by Hubble’s law Equation … At first I planned to get the value of this density to know is there any sense on this calculations … But – it appeared 2 times bigger than critical density ! And – it is not Hell-o’s density, it is difference with universe density … So, dark hell is 3 times more populated, than our lighted heavens. Why “hell” ? If university’s density is more than critical, it will collapse. How is such future for all of us, what to you think ?