According to the current cosmological theories, it's the model that explains the early life of the universe, starting from a rapid expansion of hot and dense matter.

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What is actually universe? only matter or both matter and space? [duplicate]

I have googled for the "meaning of universe" where I found the following: "all existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light ...
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How exactly, or whats the process, rather, of energy changing into matter?

$E=mc^2$ this is the equation by Einstein claiming energy can change from energy to mass. this would happened at the big bang I assume, when electrons and protons were made to create hydrogen and some ...
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Matter originated out of space? [on hold]

Is it possible that matter has originated through space out of imbalance of space? If yes then is this event same as big bang? Also is it possible that there are multiple non-interfering big bangs? ...
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The Big Bang theory [duplicate]

According to big bang theory the whole universe was formed by this big explosion and it gets bigger and bigger Does that mean it has limits? and what do you think we can found beyond all that ?
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Has a theory of a small Big Bang in a much larger universe been proposed?

I have a theory I think might explain why the universe has accelerated in a way that doesn't require dark energy. I'm wondering if someone has proposed this theory before (did some research and ...
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Are Stephen Crothers' claims legitimate? [closed]

I came up last night with a talk given by Stephen J. Crothers in which he claims that black holes and the Big Bang have no basis in general relativity. But is he really true? How legitimate are his ...
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Can the big bang be “light turning into space” at the edge of the universe? [closed]

The theory I've recently come to postulates that: The volume of space filling the universe is finite and is constantly growing, thus the boundaries of the universe are constantly expanding. The ...
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Were there time just after the Big Bang?

I have understood that just after the Big Bang there were no cesium atoms and the definition of time requires cesium atoms. So were there any time before cesium atoms appeared in the universe?.
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Is it possible for the universe to be moving towards something, rather than expanding?

We all know that the universe is flying away from the Big Bang at speeds approaching or exceeding the S.O.L. However, is it physically possible for an object to be pulling the universe away as well?
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Does the big bang violate the conservation of energy? [duplicate]

It is a fact that a thing is existing now because it had already been created. So why don't we take this to account to redefine law of conservation of energy.
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What Happens In Billions Of Years Time To The Universe? [closed]

I'm trying to imagine in my head what happens to the universe in ten billion years, twenty billion years, etc. I imagine that all mass in the universe turns to black holes, as when mass reaches the ...
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Is this a great flaw in big bang theory? [duplicate]

Einstein said that, Time & Space cannot exists without one another. Big bang says, time didn't exist before the big bang. So the Primordial ball referred in the Big Bang theory didn't had any ...