Big bang
When we see the world and space outside we were confused that how this universe is firmed. There are many theories given by scientists to answer this mystery, but the theory that was accepted by most of the astrophysicists is The theory of the big bang.
About the big bang
The theory states that there was an egg-like structure that consists of all matter that the universe is made up of.
It is highly dense and at a very high temperature. At the starting of time, they called it"singularity",13.7 billion years ago it starts expanding at very high speed (some believe that the speed is more than the speed of light)
and started cooling down. Then all subatomic particles like neutrons, protons, and electrons start collapsing and forming light atoms.
This process is continued until the formations of stars and planets.
The rest is known to us.....
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Good work
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