Question

what is big bang theory?​

Answer 1

Answer:

The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today.

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Answer 2

Answer:

The big bang theory is defined as the theory that the universe may have been created in a huge explosion at least 12 billion years ago, ...