The first quesion I have is this that what if for a moment I believe that God never created the Universe then who did it? The big bang? what led the big bang to happen? And what was there before the The big bang? and before the before of the big bang? I mean there has to be creator or i will say a creating force.
Thank you in advance, I would like answers with sources, evidences, proofs, etc
Well I'm not an expert in post Standard model physics, but I have read up on it a lot in my life, so I can tell you at least some of the science behind it.
The best idea we have right now (but not perfect by any means), as others have mentioned, is the multiverse theory. Just like when we found out our planet is just one of many planets in the solar system, and then we found that our solar system is just one of billions of other systems in the glaxaxy, and then we found out our galaxy is just one of billions in the observable universe, it now may even be that our own universe is one of inifnitely many more.
You might ask, what is the evidence for the multiverse? Is it just a guess, or is there some tangible evidence behind it. Well there are three types of multiverses being discussed withing science, the "bubble version", the "brane version" (based off String Theory), and the many worlds interpretation of quantum mechanics (which I personally think is the coolest of all, as it posits the existence of parallel universes and alternate realities
). The reasoning behind these can be horrendously complicated, from the hyper 11-dimensioned view of reality in String Theory, to the realiziation of all possible outcomes in the wave function without it collapsing in quantum mechanics, sbut there hasn't been much experimental evidence yet. Some really cool recent discoveries like "dark flow" and cold spots in the cosmic background radiation may be actual possibilites of evidence though, and if you're interested you can google that, or pick up some physics books.
To put it extremely simply (emphasis on extremely), imagine a hot bubbling bath. In this bath, there is no concept of time or even physics as we know it. It exists beyond what we understand in our daily lives. There are energy sites, or places in this bath where if a stimulus is triggered in a certain way, a bubble can form, which is a "big bang". Of course, different energy sites can create different shapes or sizes of the bubble, thus you can have multiple bubbles forming, each with their own properties. This is imporatant. Different kinds of universes can be made, each with their own constants and variables. For example, there a universe can be formed with certain properties that prevented it from forming matter, so its entire composition is that of energy and light. Another universe may be filled with antimatter, rather than matter. There's infinite possibilities. And that begs the question, why is our universe so finely suited to humans? How come our universe is capable of producing complex life such as ourselves. Well the reason is that we only exist in this way because of the unique properties of our universe. Out of the inifinite many possibilities, our universe formed in a way that made it possible for life like us to form. This is called the anthropic principle. The universe does not exist this way for us, but rather, we exist this way because that's how the universe turned out.
Of course the penultimate question is, where did this water bath (analogy for the multiverse) come from? Well that's still hotly debated, and no one knows for sure. All of this is a pretty young theory, and still a lot more work has to be done. But the key point is, science doesn't rule out the possibility of a god, it has just positied that there is no need for one to have created our universe.