The Shape of Space?

Our modern understanding of the universe is that it is infinite and expanding (from a point in space where the big bang originated in a sudden and violent expansion of quark gluon plasma).  Recent observations by astronomer and cosmologist, Alexander (Sasha) Kashlinsky may show that the universe has an edge and there may be many other universes.  He observed that a cluster of galaxies are clustering together as if being pulled by another force - what he calls Dark Flow. This Dark Flow appears as a cold spot on the 'soup' of sound of our universe.

If the universe is not infinite, but has a shape then what is it?  Kashlinsky along with an astrophysicist, Jean-Pierre Luminet, theorize that the universe is a dodecahedron.