what was the cause of the Big Bang?

Simplecyx · Post by **Simplecyx** » June 11th, 2013, 12:38 am

It is said that the universe comes from the Big Bang. What things arouses the Big Bang ? Why did it happens? We can not say it happens for the purpose that one day we human could come into being, can we?

Thinking critical gave a good correction below, I've modified some, thanks very much; and I am certainly curious about what is "nothing".

Thinking critical · Post by **Thinking critical** » June 11th, 2013, 1:03 am

Why is not the correct question to be asking, as it appears your asking why as in what is the reason.
That question can never be answered.

If the BB theory is in fact the correct explination for the origin of our Universe, the questions to ask are what was the initial cause that sparked the chain of events as descried in the theory? How did something come from nothing? What is the NOTHING?

Wuliheron · Post by **Wuliheron** » June 11th, 2013, 1:35 am

In the beginning God farted is about as good an explanation as you'll get because modern science doesn't have a clue. All we know is the evidence it happened is overwhelming and both inflationary theory and relativity are accurate to 14 decimal places.

Teh · Post by **Teh** » June 11th, 2013, 4:10 am

Simplecyx wrote:It is said that the universe comes from the Big Bang. What things arouses the Big Bang ? Why did it happens? We can not say it happens for the purpose that one day we human could come into being, can we?

Thinking critical gave a good correction below, thanks very much; and I am certainly curious about what is "nothing".

Look at it this way: "Nothing" is not a physical state. The closest nature can achieve to "nothing" is the vacuum state - the state of lowest energy. There turns out to be quite a bit going on, even at this "nothing" state. If you want to understand this state in detail, you will have to study quantum field theory.

There are other states, that behave like the vacuum state, but actually have a higher energy. These states are called the "false-vacuum" and are meta-stable. There is a probability that they will decay into the vacuum state. i.e. there is a probability that tiny bubbles of true vacuum will form in the false-vacuum.

Some of these bubbles of true vacuum have the correct properties to expand at an incredible rate. I believe that such regions of space double in size every unit of Planck time. This process is called inflation. The bubble of vacuum is now a universe.

Inflation ends once the universe reaches a certain size (no idea what that is - but still quite small) and undergoes a phase-transition. This is the thermal event known as the "Big Bang" and it happens everywhere in the universe.

An excellent popular book on the subject is "Many Worlds in One" by Alex Vilenkin.

Simplecyx · Post by **Simplecyx** » June 11th, 2013, 6:37 pm

Thanks for your recommendation Teh. I have not much fundamental knowledge in science, so I doubt if I can understand the book or not; however, I will look if I can find one and give a try.

Teh · Post by **Teh** » June 12th, 2013, 3:47 am

Simplecyx wrote:Thanks for your recommendation Teh. I have not much fundamental knowledge in science, so I doubt if I can understand the book or not; however, I will look if I can find one and give a try.

I think the important things to realise are:

1. The universe did not come from "nothing" it came from the false-vacuum.

2. The big-bang happened after the universe was formed.

3. These processes are happening all the time - i.e. there are universes being born out of the false-vacuum as I type.

Welcome to the multiverse!

Therealdjcamm · Post by **Therealdjcamm** » July 18th, 2013, 8:55 pm

The most recent understanding is that it was neither 'big' nor was it a 'bang'. The 'explosion' WAS everything, the universe didn't explode inside of something because the 'explosion' was all there is and is all there will be in this dimension, as far as we know. If the multiverse theory holds out then we can presume that there is a universe for ever single possible configuration of things meaning that the particular way in which our universe formed is barely even noteworthy in the grand scheme of things. I'm not a physicist so I can't explain this very well, but from what I know there are many potential causes for the formation of our universe, most understandings are heavily routed in incredibly advanced mathematics.

My own understanding is that every single thing exists simultaneously all at once in the same place like a multidimensional soup of stuff. Mathematically it makes sense because if every formula were to be combined, the grand total of all the maths would equal 0, and 0 is a nice number to end with because it can exist without reason. If you turn your back on a 0 it won't give a damn, unlike a 1, which would still be there, waiting for you to subtract from it. I'm talking rubbish now aren't I? Or am I? Sorry, things get messy when you discuss the creation of spacetime.

Simplecyx · Post by **Simplecyx** » July 20th, 2013, 3:36 am

Therealdjcamm wrote: My own understanding is that every single thing exists simultaneously all at once in the same place like a multidimensional soup of stuff. Mathematically it makes sense because if every formula were to be combined, the grand total of all the maths would equal 0, and 0 is a nice number to end with because it can exist without reason.

" 0 is a nice number to end with because it can exist without reason", I approve of this.

Discards · Post by **Discards** » July 20th, 2013, 4:33 am

Hell is actually an enormous place - and as of now, it is more or less empty. You'll find Hitler there. Maybe Nietzche's in there --- I don't know.

In the future we are all going to Hell. At some point, there will be so many of us there that even the confines of Hell will start to falter. When this happens even material objects will start falling into hell. Eventually all hell will break loose, so to speak. At that point there will be what we look back in as the "Big Bang".

Simplecyx · Post by **Simplecyx** » July 20th, 2013, 4:48 am

Discards wrote:Hell is actually an enormous place - and as of now, it is more or less empty. You'll find Hitler there. Maybe Nietzche's in there --- I don't know.

In the future we are all going to Hell. At some point, there will be so many of us there that even the confines of Hell will start to falter. When this happens even material objects will start falling into hell. Eventually all hell will break loose, so to speak. At that point there will be what we look back in as the "Big Bang".

But if Hell is a black hole...what will happen? May be we ought all go to Heaven to make a "Big Bang" there?

Spiral Out · Post by **Spiral Out** » July 20th, 2013, 8:05 am

Teh wrote:I think the important things to realise are:

"Realise"? You're not from Texas, are you...

Teh wrote:1. The universe did not come from "nothing" it came from the false-vacuum.

Can you explain the formulas and mathematics that supports that claim?

Teh wrote:2. The big-bang happened after the universe was formed.

How could anyone possibly know such a thing? Can you explain exactly what the big-bang is and what the conditions and properties were that caused such a event?

Teh wrote:3. These processes are happening all the time - i.e. there are universes being born out of the false-vacuum as I type.

Where are these other universes? Do you have pictures of them? How many universes are there? How many multiverses are there? An infinite number? If so, can you explain this infinity with a formula or mathematics?

Teh wrote:Welcome to the multiverse!

Which particular multiverse do we reside in?

Altaire · Post by **Altaire** » July 22nd, 2013, 9:25 pm

I had believed the big bang was born out of super symmetry. This leads to the cycle of time. Perhaps a multiverse interaction disrupted this symmetry. But since quantum mechanics dictates something from nothing. Anything is possible. The universe is expanding at an ever faster rate. Unless dark matter can pull things together again, a big bang repeat is doubtful. We may be amid a one time event.

Thanks, Guy.

Spiral Out · Post by **Spiral Out** » July 22nd, 2013, 9:44 pm

Aren't we putting the cart before the horse here? Shouldn't there be some reasonable evidence of a "big bang" before we start asking what caused it?

Thinking critical · Post by **Thinking critical** » July 22nd, 2013, 10:15 pm

Spiralout wrote:

Where are these other universes? Do you have pictures of them? How many universes are there? How many multiverses are there? An infinite number? If so, can you explain this infinity with a formula or mathematics?

The math that supports the multiverse theory emerged from the mathematical equation that explains inflation. If you Google theoretical cosmology inflation theory you will find the formula that supports the logical conclusion of a Multiverse, good luck trying to make sense of it though

just looks like a pile of letters, numbers and squiggles to me.

Kansara · Post by **Kansara** » July 24th, 2013, 8:57 am

I think big bang theory could be right only in context of what science knows today. Basically it says that there was something which we don’t know (you may call this nothing) and then suddenly it started with something we can know. We may attribute this something or nothing to energy as well. So if we put it like Big Bang was cause of an universe (That we know or we understand) it could be right. However it is would be incorrect to say that there is nothing which we don’t know.

If you go by eastern philosophy it is said that universe was created by an ego of Bhrman (It does not mean a God or deity) so what ego means here is when it got some properties and attributes which can be realized by an observer.