  According to modern quantum physics, at the microlevel, the dimension of
space-time is at least 11; we only observe 4 dimensions because the others are
compactified: the size along each of the other dimensions is much smaller than
the macroscale. There is no universally accepted explanation of why exactly 4
dimensions remain at the microscopic level. A natural suggestion is: maybe
there is no fundamental reason why exactly 4 dimensions should remain, maybe
when we go to even larger scales, some of the 4 dimensions will be compactified
as well? In this paper, we explore the consequences of the compactification
suggestion, and we show that -- on the qualitative level -- these consequences
have actually been already observed: as superclusters and as evidence that is
usually interpreted as justifying dark matter. Thus, we get a new possible
explanation of both superclusters and dark matter evidence -- via dimension
compactification.
