Wormholes or tunnels through space

Question topology of the universe is one of the contemporary issues in theoretical physics. Today, there is a large number of works that offer one or another model to describe the evolution of our universe. Despite the fact that the global space of our universe is flat, but locally, according to the general theory of relativity, any matter, located in it, to a greater or lesser extent, distorts it. Especially strong this effect is Especially strong if shown in black holes. Wormhole is a "tunnel" between the two "inputs" - parts of the space where the curvature is maximal. Back in the mid-50s of the last century, American scientist John Wheeler hypothesized that our universe is at an early stage consisted entirely of such "topological handles" and "tunnels" which are nothing more than a wormhole. Since the "Big Bang" passed more than 14 billion years .