Question

how we can say our universe started due Big Bang???

Answer 1

Heya..........!!!!

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Big Bang Theory is an acceptable theory by Scientists .

Big Bang Theory explains the Origin Of our Universe .

Big Bang theory explains about the origin of Universe and it's evolution .
It is believed that Universe originated around 140 billion years ago and it was in the form of Big hot gas expanding outwards. Then There was an Explosion in which it's pieces spread far away and those pieces are still spreading away . After the explosion the Universe Froze and due to this the particles :- Neutrons , protons and electrons were created. Atoms were also formed and Hydrogen was found in large quality .


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Answer 2

Because there still exist some microwave radiations which do not have a specific source travelling in the universe which scientists believe are remnants of the tremendous amount of energy released during the big bang.