There are many theories. Here is one of them. The Big Crunch is a hypothetical scenario for the ultimate fate of the universe, in which the expansion of the universe eventually reverses and the universe recollapses, an event potentially followed by a reformation of the universe starting with another Big Bang. Then Where did life first form on Earth? Again, there are many theories. Many think it could have been around hydrothermal vents that may have existed at the bottom of the ocean 4.5 billion years ago. Perfect conditions for that amount of time led up to the evolution of humans. What I’m trying to convey to you is the different between religion and the modern scientific way. One is open to change, open to learning and admitting it’s mistakes in its predictions. The other is set in its ways, unchanging. All from a collection of books written a few thousand years ago. I am writing this as someone who is not opposed to religion. I believe it has its purpose which is why it exists to this day.