What Is the Big Bang Theory?
It is one of the most important theories in astrophysics. The basics of the theory are fairly simple. All of the current and past matter in the universe came into existence at the same time. At a point in time, about 13.7 billion years ago all matter was compacted into a very small ball with infinite density, and intense heat called a singularity. Suddenly, that singularity began to expand and the universe came into being.Singularities are thought to exist at the core of "black holes.What is a "singularity" and where does it come from?Why did it appear? Well, to be honest, we don't know for sure.
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