no idea, although hopefully in the future we will be able to find out. One of the most interesting things about science is its constant progresss in undertsanding things we didnt even know existed years before
Nobody knows, and I suspect we never will. One theory is that a whole different universe existed before ours and the big bang was its end and the start of ours. An alternative theory is that nothing existed before and that at the big bang all matter was created.
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