This happened 13.8 billion years ago, but what about before that many physicists say there is no before that time began ticking they insist at the instant of the Big Bang and pondering anything earlier isn't in the realm of science, We'll never understand what pre-big bang reality was like or what it was formed of or why it exploded to create our universe such Notions are Beyond human understanding.
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Why Scientists Think We Might Live Inside a Black Hole | Space Documentary
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