The big bang is most logical theory about the origin of the universe. Developed by Belgian scientist George Lomter in 1927
But how can they prove that this theory is true or at least close to reality
The answer is easy
In the middle of the last century it was observed that stars in distant galaxies appear red and this is something that should not happen
Because we also know that the stars are composed mainly of hydrogen and helium, these two atoms can not produce this level of red color
The most powerful explanation is that the red color was released from the motion of the stars, there is a phenomenon called red and blue displacement
If there is a radiant object approaching you, its color tends to blue
If this body moves away from you, its color tends to red
This means that the stars were sometime close to us
So all the stars and planets were close together at some point
This does not mean it is completely correct but it remains more logical
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