Environmental Sciences, asked by Sridharkpit, 8 months ago

what is big bang and when did it happen ?

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Answered by Anonymous
38

The Big Bang theory is a cosmological model of the observable universe from the earliest known periods through its subsequent large-scale evolution. ... Detailed measurements of the expansion rate of the universe place the Big Bang at around 13.8 billion years ago, which is thus considered the age of the universe.

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Answered by armaanjitsingh
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Please mark me as brainiest and said thanks

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