Question

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Q what is big bang theory?

Answer 1

The Big Bang is a scientific theory about how the universe started, and then made the stars and galaxies we see today. As a whole, the universe is growing and the temperature is falling as time passes. Cosmology is the study of how the universe began and its development. Scientists who study cosmology agree that the Big Bang theory matches what they have observed so far.

Answer 2

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.