The idea of parallel universes, worlds that exist side by side along with our own, used to be viewed with suspicion by scientists as being the realm of cranks and at best, mystics. Any scientists who dared to work on parallel universes were often subject to ridicule. However, the tide has turned dramatically today and the issue of parallel universes has come to fascinate scientists well beyond mere speculation. Physicists and astronomers around the world are now wondering what parallel universes may look like and how they were born. It has been postulated that parallel universes occupy the same space as our own in some ghostly manner. Like our own universe, a parallel universe is an intersection of time and space and contains matter, stars, galaxies, and living things. In other words, parallel universes are very similar to our own. There may be human beings who are duplicates of ourselves. Furthermore, they are connected to us multidimensionally through mechanisms explainable only by the theory of quantum physics. Normally, parallel universes do not interact with each other. However, some scientists believe that at times the so-called wormholes may open up, making it possible to communicate and travel between them. It is very likely that our universe is not alone at all. Instead, it is one of many possible parallel universes. Still, some scientists smugly refuse to admit that parallel universes or dimensions can exist next to ours, just beyond our grasp.