Question

What is big bang theory? Explain.

Answer 1

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The Big Bang theory is an effort to explain what happened at the very beginning of our universe. Discoveries in astronomy and physics have shown beyond a reasonable doubt that our universe did in fact have a beginning. Prior to that moment there was nothing; during and after that moment there was something: our universe. The big bang theory is an effort to explain what happened during and after that moment. 

According to the standard theory, our universe sprang into existence as "singularity" around 13.7 billion years ago. 

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Answer 2

Big Bang Theory:

Explanation:

     It  has been the dominant scientific theory ,the starting point of the universe(stars, planets, galaxies and the Universe ) for long long ago. In 1927 Big bag theory was proposed by Georges Lemaitre where the universe start with the explore of  atom.It started with nothing- no space, no matter, no time and no energy

5 interesting factors:

• Our Universe is just a small part. There are lot ofuniverse that exist. We are in Multiverse. This idea is from  Big bang theory
• Edwin Hubble (1920) says that the Universe is not static. It can be contracting,expanding frequently.
• Dark energy makes the Universe expand ,rotate at a larger rate .There are lot of galaxies in milky galaxy
• The Universe is infinite(no end).It is not  closed sphere  
• Stars and galaxies include only 4%Universe consists of. 96% of the things

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