String Theory and the Fabric of Spactime Part 1

The universe is expanding outward since it was first given existence by a violent singular cosmic explosion about 13 billion years ago. This expansion still puzzles scientists to this vary day, some believe that the expansion will come to a stop, then actually reverse. This will then lead to something called a cosmic implosion. Which is the universe reverting back to its initial singular form before the big bang. Galaxies will approach each other slowly at fist and as more time progresses the speed does at rapid and exponential rates. This is just one theory of what could happen but there are more.

Tearing the Fabric of Space

If you'll remember our previous analogy of space being like a rubber membrane. When a rubber membrane is stretched continuously or with enough force the rubber will tear. This may seem like an error on the use of a rubber membrane for our comparison, space surely can not tear like rubber can. If you followed general relativity then you would be correct in the thinking that space can not tear. But following string theory you start to see that tears are common things in spatial fabric at quantum level, also at a macro level . This is the concept behind what we call wormholes(the things from Star Trek and Interstellar). A wormhole really is just a bridge or tunnel that is essentially a shortcut from one point of the universe to another. 

The wormhole does not just connect two existing regions of space, but in fact tit creates a whole other different region of space(shown in the diagram as the wormhole. 

Beyond Strings: In Search of M-Theory 

In talking of string theory it may have been confusing, so what I am about to say is going to be a bit rough. String theory is not just a single theory but in actuality there are five variations of string theory(called: Type 1, Type 2 A, Type 2 B, Heterotic-O, and Heterotic-E). But there is one theory that unites al five of this theory. This theory is called the M-Theory. The video and link are better ways of understanding M-Theory.