The Elegant Universe - Post 4

     Since its discovery, string theory has been troubled with many problems.  The main issue being the sheer number of possibilities the theory entails.  String theory opens up infinite possibilities about the universe; many more than we could ever hope to explore.  This has led physicists to refine the theory about more specific details of the universe.  Many different versions of String Theory have emerged from the single main theory.  Each attempts to simplify it, and focus its properties on small portions which are easier to calculate.  Physicists hope to one day unite all of these theories into one common "M-Theory"

     Another issue within String Theory is the manipulation of space time.  The fabric of space time, as put forth by Einstein, cannot be ripped.  Ideas in string theory suggest the spatial fabric must be ripped to create universal phenomenon such as wormholes and black holes.  These curious attractions have failed to be explained by physicists, and many are still unsure of their existence.