Question

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. The universe began as a very hot, small, and dense superforce (the mix of the four fundamental forces), with no stars, atoms, form,

Answer 2

Big bang is the origin of the universe: it is the rapid expansion of matter from a state of extremely high density and temperature which according to current cosmological theories marked the origin.

Big bang is the explosion in empty space, from which the first particles are made, from which the matter is made, from which the universe is made