Anyone ever wonder about the big bang theory

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Anyone ever wonder about the Big Bang Theory and ponder if it has ever happend before this planet with another planet similar to Earth with lifeforms similar as well? That maybe we are just part of a cycle of life that restarts when one planet dies and another hospitable one is born or another planet becomes hospitable for life. For example, when we are gone and this planet is destroyed the only record of us might be a flag on the moon. Anyone believe humans could ever re evolve on a similar planet 13 billion years after Earth is gone? I know this is a weird one and every once in a while i will ponder the idea. Hopefully ill get some interesting thoughts on this