What was there before the BIG BANG?

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I fancy boys said:
It's not expanding *into* anything, its simply getting bigger :) like stretching a piece of rubber at all four corners.

A lot of people have been saying that the universe will contract etc etc, but i think (someone correct me if im wrong) that the mass density is such at the moment that the univserse wont eventually contract.

If it did, it would have some very interesting effects. The contraction would be in violation of the second law of thermodynamics (increasing entropy). In fact the second law would change to the opposite, the entropy of the universe would have to keep decreasing - which would have some *VERY* weird consequences.

If you dropped a mug it wouldn't break. We wouldn't be able to respire and continue to live. I think Mr Hawking actually postulated time would in effect run backwards until the point of the singularity was reached again.

So it seems like an implausible result to me tbh.
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Well they simply dont know all the answers,it might just fizzle out,less and less galaxys are being born,one thing we are all not saying which has a major part in all of this is right in front of us all,mavity and DARK MATTER,one thing i am quite interested in is string theory:confused::confused:

Good debate this as it ticks all my boxes and we can all really presume in theorys wtf is going on..
 
Messes up my mind thinking about this.

People always say there was just energy before the big bang. But then there must have been something before the energy, then something before the something and something before that something etc etc etc

Maybe we aren't ready and/or capable of understanding yet.
 
Wikipedia said:
A well-known scientist (some say it was Bertrand Russell) once gave a public lecture on astronomy. He described how the earth orbits around the sun and how the sun, in turn, orbits around the center of a vast collection of stars called our galaxy. At the end of the lecture, a little old lady at the back of the room got up and said: "What you have told us is rubbish. The world is really a flat plate supported on the back of a giant tortoise." The scientist gave a superior smile before replying, "What is the tortoise standing on?" "You're very clever, young man, very clever", said the old lady. "But it's turtles all the way down!"
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Pretty much as good of an answer as the one I gave previously
 
The big bang theory doesn't say there was nothing before the big bang. It just tries to explain a near past which resulted in our observable universe. Arguments such as "but what was there before" are fairly meaningless in that all religions require those questions as well - e.g. it all goes back to either god just was, forever, or something else happened before and so on. We can keep going back with science but there will always be something else before that which we can explain. The time dimension is only important to us because we perceive it differently to other dimensions - that doesn't mean it actually is different and more important from other dimensions though.
 
If we are the only conscious in the universe, and we die out - will the universe continue to exist?
Great thread to read at 8 in the morning, bit like taking a cold shower!
 
SlyReaper said:
I haven't read the rest of the thread, but in answer to the OP: you might as well be asking what there is north of the North Pole.

My personal favourite idea about the moments after the Big Bang, is that while space was tightly compressed, so was time. So an event that would take nanoseconds in the universe today, would appear to have taken millennia shortly after the Big Bang, had there been anyone to observe. So with that in mind, you could wind the clock back to a few milliseconds after the Big Bang. And then you could wind it back the same amount, and you'd be a few picoseconds after the Big Bang. No matter how far back you go in your time machine, the actual singularity event cannot be reached.

So from a certain frame of reference, the Big Bang happened infinitely long ago, in the same way that from a certain reference frame, the speed of light is infinite (since you can never keep up with it no matter how fast you travel).
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I quite like this theory, It sort of makes sense.
 
The best theory I have seen as to what was before the big bang is the bubble universe theory. Basically when a large area of space collapses into a super massive black hole, the material at some point reaches a critical density and explodes "inward" in a "mavity inversion". The material is then ejected into a "new area" and a universe is formed. We perceive it as a big bang. A good way to visualize it is to take a piece of balloon and stretch it across the hose of a vacuum cleaner. Turn it on and observe the negative curvature of the rubber increase in proportion to the amount of suction the vacuum can provide.

This of course begs the question, "Was there a progenitor universe? Difficult to say, but the theory none the less does address what happens to large amounts of matter and energy when they are pulled into a super massive black hole. Even thou atoms can be compressed and the space between them squeezed out they can't be destroyed. With this in mind my personal belief is that given the likely conditions inside a black hole that atoms can still experience movement. As a black hole grows, the more intense the mavity. This in turn leads to more and more space being squeezed out. Critical mass is achieved when all space is squeezed out and atoms can no longer move. For brief moment all atoms line up in a perfect unmoving lattice. At this moment time stops, and any remaining laws of phsyics break down, and the material explodes outward in a big bang.

If the current universe is sucked entirely in a big crunch the material will expand back outward with almost the same conditions as the previous universe. No material has been "lost" and the total mass remains the same. A bubble universe forms when a partial collapse occurs, but not all of it, into a dense mavity field. It is simply ejected into a "new area". The fun part here is that given that the old universe loses some mass to the new one, that the laws of phsyics in both will likely be very different to what we can perceive right now.
 
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The universe could have existed before the big bang. One theory is that the big bang was the result of the Universe crushing in on itself then re-expanding (big bang)... the thing is it could have been doing this for eternity.

PS. "Nothing" and "Infinity" are two words humans find very difficult to comprehend.
 
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