The Big Bang is currently considered more modern in terms of its emergence in the universe.
This theory is also called the ideology of the expanding universe. This is an evolutionary theory.
The Belgian scholar Jorge Limitre has given the theory of the Big Bang.
In $1920,$ an astronomer named Edwin Hubble announced that the universe was expanding.
From time to time galaxies are constantly moving away from each other.
According to the Big Bang theory, various phases regarding the expansion of the universe are taking place in the following stages.
The objects from which the universe was formed were in the form of a small sphere. In one place they were stationary.
These primitive substances were extremely fine and had very high temperatures and densities.
In this very small sphere, a huge explosion caused the objects in it to disperse into space.
The Big Bang may have occurred about $13.7$ billion years ago today.
More than a second after the massive explosion, particles of primitive matter may have spread through space and expanded into the universe.
The expansion of the universe continues today. But its pace has slowed.
The first atom would have originated in just three minutes with the Big Bang. During the three million years since the Big Bang, temperatures have dropped to $4500$ degrees Kelvin and molecular matter has been formed.