Big Bang Theory the common misconceptions

There are many misconceptions surrounding the Big Bang Theory.

For example, we tend to imagine a giant explosion; experts however say that there were no explosion, there was an expansion rather than imagining a balloon popping and releasing its content, imagine a balloon expanding infinitesimally small balloon expanding to the size of a current universe

Another misconception is that we tend to image the singularity as a little Fireball appearing somewhere in space.

According to the many experts however space didn't exist prior to the Big Bang. Back in the late 60s and early 70's when man first walk up on the Moon.
Three British astrophysicist Stephen Hawking, George Elliot and Rodger penrose turn their attention to the theory of relativity and its implications recording on oceans of time in 1968 and 1973 published papers in which the exchange rate Einstein's theory of general relativity to include measurement of time and space.

Big Bang Theory evidence for the theory :

What are the major evidence is which support the Big Bang Theory

First of all, we are reasonable is certain that the universe at the beginning.

secondly, galaxies appear to be moving away from us at speeds of proportional to the distance this is called hubble's law named after Edwin Hubble who discovered this phenomenon in 1929 this observation supports the expansion of the universe and suggest that the universe was once compacted.

Third, the universe was initially very very hot is the Big Bang yes, we should be able to find some reminent of this heat.

Finally dependence of the light elements hydrogen and Helium found in observable universe are thought to support the Big Bang model of origin.

Understanding BIG BANG THEORY

The Universe..

• The age of Universe - 13.7 billion years old
• Its contents - 4.6% atomic matter; 24% dark matter; and 71.4% dark energy
• Its shape - it is "flat", meaning space adheres to Euclidean geometry, where straight lines can be extended to infinity and the angles of a triangle add up to 180 degrees, etc.
• The ignition of the first stars - now timed to have occurred some 400 million years after the Big Bang

Origin :

      The most popular and most believed theory of our Universe's origin is  BIG BANG.

What is Big-Bang :

In the extreme dense and hot singularity due to some fluctuations the well - known phenomena of "virtual particle" creation and annihilation. The spontaneous appearance of subatomic particles from a vacuum is called a QUANTUM  FLUCTUATION.
These fluctuations triggered the BIG BANG.

What happened then :

 When the universe began, it was just hot tiny particles mixed with light and energy.
After its initial appearance, it apparently inflated, expended and cool, going from very very small and very very hot to the size and temperature of our current Universe full stop it continues to explain and cool to this day and we are inside of it into table creatures living on a unique planet, circling a beautiful star clustered together in a beautiful Galaxy soaring for the Cosmos.

The tiny particles group together full stop they formed atoms. Then those atoms group together.
Over lots of time, atom come together to form stars and galaxies.
The first starts created bigger atoms and Groups of atoms called molecules that lead to more stores being born at the same time, Galaxies were crashing and grouping together.
As new stars were being born and died, then things like asteroids comets, planets, and black holes formed.

This is the BIG BANG THEORY.

REFERENCE : 

• NASA
• https://spaceplace.nasa.gov/big-bang/en/