What is the big bang theory?

Many of us wonder how everything, that is human, tree, planet, star, galaxies and even space and time came into existence.

how did our universe originate?

Now there are several theories, belief and myths about the beginning of our universe. however, the most widely accepted explanation is the Big bang theory.

which scientist use to describe initial formation of our universe.

it states that our universe began from a very hot and compressed point, which is known as a Singularity.

Based on estimation, it is said that approximately 13.7 or 13.8 billions years ago, the Singularity violently exploded.

this explosion is called the Big bang.

Scientists claim that from this explosion or big bang, space, time, energy, matters and then stars, galaxies, humans, etc. came into existence.

Now, you must be wondering, what happened before the big bang at singularity.

It is said that at singularity, laws of physics and time did not exist. if time didn't exist, then there is no reference point to determine what happened before the big bang.