Einstein is the most famous scientist in modern history. So famous and well-known that he's name has become a noun ("look at that Einstein over there", or "you are smart like Einstein"). So it may come as a surprise to you to find out that our dear Einstein was wrong about our Universe and its current expansion. One of the theories of the Universe is the Big-Bang Theory. This is the theory that at some point a "Big-Bang" created our current Universe from an infinite amount of mass....