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Because that is what our standard model of the universe tells us. It is due to the red shift of light showing that our universe is expanding away from a point. Now since we know time moves in a linear fashion, it is not hard to imagine that if we reverse this expansion, the whole universe is brought back to a tiny point commonly known as the "singularity". The real question is "how?" or "why?" this expansion happened.
What else can I help you with?
How many people believe in the big bang theory?
It depends, because some might say 'scientists'. But not all scientists believe in this theory. Also, there are those who believe in a similar idea to the Big Bang, but it is not refered to as 'The Big Band Theory.'
What do Sikhs believe about the big bang theory?
sikhs do believe in the big bang theory. it was written in the guru granth sahib ji before scientists found out.
Who or what created earth?
Some people believe God created the Earth, others believe in the Big Bang theory.
Do Jehovah witness believe in the big bang theory?
no
Was it the big bang that created are world?
Implying that you believe in The Big Bang Theory then yes our "World" aka Earth was created from the products of The Big Bang.
Whats mechanical energy?
I believe in the big bang theory! God spoke and BANG! It happened.
Who did make the earth?
some people believe that God created the earth, and others believe that the Big Bang theory is right. people say it was jesus but not for sure.
Why do people say that the big bang created the world?
The Big Bang is just another theory.
How much people watch the big bang theory?
There are nearly 18 million US viewers of Big Bang Theory episodes.
What are myths about the Big Bang THEORY?
The Big Bang Theory is a widly accepted theory in the scientific world because of the fact that it has less loopholes than others made to oppose it.I believe 1-2 loopholes are contained in The Big Bang Theory.
What is the name of the scientific theory that tells scientists how they believe the universe was formed?
The Big Bang Theory
How is the big bang theory is an example od scienctific theory?
Hello i am minakshi answer is that the big bang theory is an example of old scientific theory as big bang theory explains that there was an explosion but the isotropy and the homogenity of the universe is not explained by big bang theory to explain his we connect inflatation theory with big bang theory to explain it so the big bang theory is also an example of old scientific theory.
