Superclusters and Voids -- same curvature? According to the mainstream 'standard model', is the geometric curvature of space believed to be exactly the same within superclusters as it is in within voids? In other words, does the much higher gravitational density within a supercluster manifest itself in the form of holistic curvature of the supercluster's geometry? Is the curvature of a supercluster's internal space considered to be "closed" if the supercluster is gravitationally contracting (as opposed to expanding with the Hubble flow)? Superclusters are believed to be gravitational bound structures (e.g., their gravitation resists expansion at the Hubble rate). I note that a single supercluster can comprise a sizeable subset of the observable universe's radius. The radius of a typical supercluster is around 5E+23 meters. The radius of the observable universe is 4.35E+26. There are estimated to be around 20 million superclusters in the observable universe. Number of voids is probably within an order of magnitude of that number. Jon p.s. Please don't mention anything about alternative cosmology theories. I received 4 demerit points for my last post, and if I receive 5 more I will be banned from the forum. Santa is keeping a list, and checking it twice; he knows when I am naughty or nice.