Why Big Bang singularity happened In the earliest Universe only?Why Big Bang does not happen Now? why it will?

Question

Actually the discussion is important because ,we are not sure enough that where from the universe came indeed. At that time in Big Bang singularty moment, universe had a temperature of 10000billion degree celcius and a density of 1000,000 billions tonns of water density & had a controversial physics and mathematics that can explain every thing that evry thing happened from that time 0.0001 second after the time zero up to present day. According to us the Bing bang model is acceptable after 10-32seconds of the Big bang singularity. What hapened before 10~32second? The next thing is that whether time was started from the Big bang moment or Time was flowing and Big bang like events happened only once? or many such Big bang like events happened in universe?

Answer 1

I believe that what happened 10^-32 second before the Big Bang is still an open question which is still debated amongst Cosmologists. The question of time being started from the Big Bang can be approached in a more philosophical way, for instance, it is only intuitive to think that time was always there since we have always experienced time, but this might be the result of false induction (humans are good at this). From the evidence we are gathering (how the celestial bodies move) we can hypothesize that the Big Bang only occurred at a single point, that is, there was only one Big Bang. Note that this is just a hypothesis. (We can't really claim anything really happened the way we think since we have no means to verify it, but the scientific evidence are strong "proofs" that the Big Bang occured.)

Answer 2

Get, read, and enjoy "The Elegant Universe" by Brian Greene. This is easy reading and well written. It covers much of what your question asks. But here are some excerpts:

First, there might indeed be other big bangs in our universe. The good news, possibly, is that those others have not intersected our known universe. It's something like two rocks thrown into a pool (the universe) and the ripples from each expand outward (the known universes). We are unable to see beyond about 14 billion light years from Earth because that's all the time (14 billion years) light has been traveling since the BB.

Second, there may be multiple universes, something like slices of bread in a loaf of a metauniverse. The collision of one of these multiple universes (which lie in higher dimensions) with ours could account for the tremendous mass-energy released as the big bang (BB) in our universe.

Finally, some portions of string/M theory do posit time before the BB. This follows from the concept of two universes colliding, which means they were moving through higher dimensional space; which means covering space over time, therefore time existed before the BB.

If you like this sort of thing, you'll love the Elegant Universe.

Answer 3

We don't know why or how the Big Bang got started.

That being the case, as far as we know, another might happen at any time or any place.

Since no other Big Bangs have occurred inside our known Universe, they must be rare events.

A naif calculation of probabilities indicates that, in a Universe like ours that has an inflating space with quantum fields in it, a Big Bang might occur spontaneously once in a long, long while (like 10^120 years). The time inside this "child Universe" would start at that instant, and we (in the old Universe) could not get inside it.

Answer 4

By reading your question in first instance I remember one question my 8 yrs old son asked - "Why 7 years back I was a kid ?

There are so many things about the universe for which answer is not known, like -

1. Where is the end of universe ? What is there after the end ?
2. When time started ? What was there before time started clicking ?
3. For living being to survive so many "ifs" and "buts" are required, how all those condition occurred in earth ?
4. Who created man and other animals ? If GOD created us then who created GOD? If we are evolved on its own - how come such critical design is possible without any designer ?
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Hundreds of queries without answer .........
And I do not expect in my lifetime will get any..........

Answer 5

i'm no longer into the technicalities of the tremendous bang ( as in seconds etc ) although the " large bang " did certainly take position --- in the different case we would not be speaking --- we would not exist --- yet keep in mind an previous saying that what is going up ought to come down --- and in view that gravity became accentuated through the ( in case you'll ! ) large bang --- then i wager it will be swallowed up through the same phenomenon which will quicker or later --- take us lower back to the void from whence we got here ( it received't take position in our lifetime --- or certainly different generations --- because the international will self destruct ) lengthy in the previous this experience will come to bypass . good luck and luxuriate in life to it is fullest

Answer 6

scientists say there had been two big bangs in last 13 million years one at 6 one at 13 .~ million years

first question is we are not sure where the universe came from??

answer is God created the universe ,

all movemnts like present earth quake do happen at certain frequency probably many bangs to occur before the earth gets to another different shape

Answer 7

big bang happened years ago as the universe was a cluster at the ancient time and due to high gravitational power got splitted and this cant be taking place again and again as the galaxies are already moving away from each other.

Answer 8

well according to the theory....the whole universe was concealed in a lump called the primeval atom...as it had too much energy with all the universe inside it had to crack...this led to the formation of the universe....now as this universe has no end...it cannot be considered as atom with enormous amount of energy that will fall apart...hence it wont happen in the future....and as people now consider time as the 4th dimension i think it was formed after the explosion.....

Answer 9

i don't know