how does Universe has form
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The Big Bang theory is the prevailing cosmological description of the development of the universe. According to estimation of 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.
Diameter: Unknown. Diameter of the observable universe: 8.8×1026 m (28.5 Gpc or ...
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