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24) Big Bang is a fact.
We know for sure that universe is expanding and that 13.7 billion years ago it was very hot and dense. But still it does not prove a Bing Bang. Big Bang theory does not work without inflation theory and in order to prove inflation we need to register gravity waves from it. Best way is to detect polarization of CMB by gravity waves. So far it was not detected thus Big Bang remains a theory.
25) Known universe started from the Big Bang.
According to current model, first was a "cold" Inflation stage expansion and only after that inflation field energy transformed into matter and heat, making it super dense and super hot, creating a Big Bang.
This misconception we can see in popular shows for example "How the universe works":
How the Universe Works S03E04 First Second HDTV XviD-AFG - Vidto (what they say from 10:46 is WRONG)
We know for sure that universe is expanding and that 13.7 billion years ago it was very hot and dense. But still it does not prove a Bing Bang. Big Bang theory does not work without inflation theory and in order to prove inflation we need to register gravity waves from it. Best way is to detect polarization of CMB by gravity waves. So far it was not detected thus Big Bang remains a theory.
25) Known universe started from the Big Bang.
According to current model, first was a "cold" Inflation stage expansion and only after that inflation field energy transformed into matter and heat, making it super dense and super hot, creating a Big Bang.
This misconception we can see in popular shows for example "How the universe works":
How the Universe Works S03E04 First Second HDTV XviD-AFG - Vidto (what they say from 10:46 is WRONG)