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Answer by eshaya for How did the big bang's low entropy (which comes from...
Nadav answers this well, but since you want an explicit discussion of the entropy I will try to do that. Right after recombination, when the universe was a nearly homogeneous gas of hydrogen, helium,...
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Gravity is what allows a the small initial fluctuations in the matter density after the "big bang" (or after exiting inflation), to grow into large differences. Dark matter, followed by baryonic...
View ArticleHow did the big bang's low entropy (which comes from gravity) get converted...
In many places you will read that just after the big bang, the universe was filled with very hot gas which appeared to be in thermal equilibrium. You will then read that this is actually quite a low...
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