answered question

answers (3)

pixelsilva
1
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BEST ANSWER  chosen by asker   |  pixelsilva  |  September 15, 2009 11:38 PM
http://www.universetoday.com/wp-content/uploads/2008/06/cmb_timeline.jpg

That´s what newer theories are suggesting.

The conventional answer to this question is usually that there was nothing before the Big Bang because that was the event that started it all. The Big Bang certainly suggests that time began at the first instant of the Big Bang, since before then, the universe was collapsed into a singularity.

Everything is squeezed down to zero and such physical quantities as space-time become infinite. The singularity is the point at which time has no meaning. But, if there is no time for something to cause the Singularity to explode, then it will be frozen in time without causing any Big Bang, right?

Now scientists are starting to consider that perhaps there was time before the big event. We don't have a good model of the universe, and current theories don't answer the questions. But there’s the idea of multi-universes that keep creating "baby" universes. Our observable universe might not be the whole story. There might be time before time.

Among the current theories of pre-Big Bang today, the most popular are the String Theory and the Collision of D-Branes theory.

http://universe-review.ca/I02-22-LQC.jpg
Asker's rating:  

voted helpful: davepamn

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davepamn
davepamn  |  September 16, 2009 06:16 PM
Nominated as the answer of the day. What did the preexisting universe look like? What type of matter existed in the Preexisting universe?

Let me know, if the permalink is working on this question.
davepamn
davepamn  |  September 16, 2009 06:19 PM
If we are one Universe in the MultiUniverse then time is infinite.
mithrandir
0
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mithrandir  |  September 14, 2009 01:39 PM
Well, you might find the answer in this great story by Isaac Asimov. The story is called 'The Last Question', and is one of the amazing ideas by Asimov..

I won't tell you the outcome, but it is well worth the read. I would advise to read the long version.
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davepamn
davepamn  |  September 14, 2009 02:42 PM
Tell me the outcome. I'll read the story, later.
mithrandir
mithrandir  |  September 14, 2009 02:55 PM
No, that would really (REALLY) spoil the story. Check the short story for the conclusion.
davepamn
davepamn  |  September 14, 2009 05:51 PM
http://www.multivax.com/last_question.html

1. On May 14, 2061, Multivac answers the deep question. Energy from the sun is stored an utilized on a planet-wide scale, from a small one mile station above the earth.
2. The sun runs out of energy in twenty billion years
3. In a trillion years, everything will be dark and entropy will be a maximum
4. You poor sap, "you said we had all the energy we need forever". You said, "forever".
5. Travel to planet X-23 and face overpopulation. Population doubles every 10 years.
6. Listen to Multivac taunt human inquiry with the words, "INSUFFICIENT DATA FOR A MEANINGFUL ANSWER"
7. Build new stars out stellar gas, reverse the entropy. How does sub-meson create a force beam?
8. Universal AC is no better at answers than Multivac
9. Stars are becoming white dwarfs
10. Cosmic AC says the universe is made of hyperspace and something that was neither energy or matter.
11. Cosmic AC works on a solution in all conceivable solutions and says "Let there be Light". The universe is a computer. ha ha ha
mithrandir
mithrandir  |  September 14, 2009 05:56 PM
No, AC is the creator of the universe, and therefore AC is God.
(and to reason a bit further, God is created by human)
davepamn
davepamn  |  September 15, 2009 01:57 PM
We are as God once was. Ok
docbrown
2
Votes
docbrown  |  September 15, 2009 06:33 AM
Not sure what your goal of asking all the M-theory questions is exactly. I've found that anything beyond undergraduate Math and Physics goes essentially unanswered. Not exactly a surprise...

Math was my schtick, so I can only say that this question is a nonstarter. According the the current standard model, asking any question of the universe before the Big Bang is pointless because the model has nothing to say about it.

That said, after the Big Bang, once Godel showed that closed timelike curves existed mathematically in Einstein's model of Relativity, time does not exist as we know it, and thus is inherently a part of the structure of space itself.

Personally, I think these things crop up in physics because physics uses mathematics to describe the universe. The equation, E = mc^2 implies that matter is proportional to energy in nature, as if it is a two way street, but in truth it is uncommon for energy to become mass. The other direction tends to be more natural. (Feel free to take that however you wish.)

Similarly, slapping a negative sign on the time variable is simple enough mathematically, but what does that mean in nature? How does one go back in time? SInce the universe is expanding, (and this expansion is accelerating!) to go back in time we would somehow have to come up with the energy to crunch back the entire universe to a previous size. This is unlikely to be possible, but makes calculations go smoother.

I think at some point physics is going to have to take these things into account as their models of the universe/space/time progress.

voted helpful: stanar, davepamn

Comment
davepamn
davepamn  |  September 15, 2009 01:54 PM
Supposely M-Theory is the Theory of Everything. The 11 th dimension explains the distribution of clumps of matter in the Universe. The ripples in the parallel universe create matter in our universe. The multiuniverse suggests that big bangs are constantly happening in other universes that are coming into existence.
davepamn
davepamn  |  September 15, 2009 01:54 PM
Scientist think there was time before the big bang. The previous model suggestion time and space did not occur until the big bang.
davepamn
davepamn  |  September 15, 2009 01:57 PM
According to the 11 th dimension which is infinitely long and about 1 trillion of millimeter wide, closed strings travel between universes. The closed strings could explain quantum gravity.
davepamn
davepamn  |  September 15, 2009 02:00 PM
The question derives from how worm holes connect parallel universes. What are your thoughts on worm holes?
docbrown
docbrown  |  September 16, 2009 09:00 PM
As I said, my training is in mathematics, so what little I know of physics is a few undergraduate classes and the rest is self taught. I have no doubt that there was "something" before the big bang, whether we can attribute the concept of time to it as we know it is simply a matter of speculation. Wishful thinking at its best that whatever that "something" was, we even have a common point of reference to describe it. I'm not saying we can't or shouldn't speculate, I am merely pointing out that such concepts are still in the hypothetical stages and still have a long way to go before they get mainstream acceptance as full blown theories. I hear the mathematics is very nice though. :-)

As for wormholes between parallel universes, as I mentioned in my original answer mathematics allows things to happen in the context of mathematics, that quite likely are not allowed in nature. Wormholes are another object that crept into physics because they are allowed mathematically, whether or not nature allows them is another issue. Stuff that I have read from Michio Kaku assures me that travel between parallel dimensions is not possible.

Of course, don't forget, the concept of parallel worlds and the many worlds model came about only because it works mathematically. The statistical model which contains only our universe works just as well, i.e. they have been shown to be equivalent as theories. The reason the many worlds interpretation gets used more often is because a) it's sexier, and b) it provides a mentally pleasant explanation as to why electrons can appear to be everywhere at once.
davepamn
davepamn  |  September 16, 2009 09:41 PM
"But, if there is no time for something to cause the Singularity to explode"?

The idea of other universes and ripples in the 11 dimension membrane are helping scientist predict the emergence of multiple universes. This implies that there is unlimited sources of matter and energy because big bangs are occurring endless in other universes in the multi-universe.

Therefore, time has to be exist in pre universe state for the singularity to launch into the big bang. Something can not come from nothing. Spontaneous generation is too far fetched to believe.
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