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The big bang theory is the prevailing cosmological model for the observable universe[1][2][3] from the earliest known periods through its subsequent large-scale evolution and the big crunch is a theoretical scenario for the ultimate fate of the universe, in which the expansion of the universe eventually reverses and the universe recollapses, ultimately causing the cosmic scale factor to reach zero, an event potentially followed by a reformation of the universe starting with another big bang

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  • Réponse publiée par: tayis

    There are too many theories on how the universe was made.

    For me the famous one is the "BIG BANG THEORY" a cosmological theory. Under this theory, space and time emerged together 13.799±0.021 billion years ago and the energy and matter initially present have become less dense as the Universe expanded.

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The big bang theory is the prevailing cosmological model for the observable universe[1][2][3] from t...