Question

why did Big Bang occur and before Big Bang what was there ?

Answer 1

Hi Abir!

Big-bang is a theory given for birth of the universe. According to this theory all the mass in the universe was concentrated at one place, which exploded to give birth to all the stars, planets and other celestial bodies. The concentrated mass was extremely hot and dense. This lead to the explosion known as the big bang. The universe existed as a “singularity” before the big bang.

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