If there was no space before the Big Bang...?

There are probably more misconceptions regarding this subject than any other, and several of them are illustrated in some of the answers you have already been given. Modern cosmology tells us that space itself was created at the Big Bang itself, along with everything else (excuse the caps) AS FAR AS OUR UNIVERSE IS CONCERNED. I'm not shouting, but I don't know how to use italics. I make this distinction, because in a way, you are probably right. There may well have been many other Big Bangs, thought not occurring in our Universe. Each one will have occurred in it's own universe, though we have no idea whether the number is infinite or not. When discussing this subject, we must always distinguish between OUR Universe, and a possible Super-Universe which it may inhabit along with others. Some people don't like the idea because they claim the word universe means "everything there is". Well, it did until the concept of the Multiverse came along, and many physicists including me think we need to redefine the word! It now appears to be one among many. If you want to take it further, I suggest you look up M Theory for an explanation. Wikipedia has a good article on it. For those who believe it is scientists playing games with equations, some physical evidence is beginning to emerge to back up at least the general idea of 'brane theory. Work done very recently on temperature anomalies in the Cosmic Microwave Background Radiation indicates as such, and the discovery that millions of galaxies are rushing at very high speed towards one point in the Universe (towards something we have labelled The Great Attractor for want of a better name) seems to point in the same direction. That huge gravitational attractor may be an indicator of another 'brane, or universe, close to ours, if not actually touching. We already know gravity is a planar field, and we suspect it is a property of the Multiverse and as such is the only force able to penetrate all 'branes, in a sense linking them together. We do have rather more than some very pretty maths suggesting all this, though it is very early days, and we have a long way to go! It should also be remembered that the Big Bang Theory plots the development of the Universe from the point of creation, and NOT the creation itself.

You make a common error. Perhaps you know that our BEST math breaks down as the Universe is 'wound back' to the first moment of creation. Before a certain time, our theories just do not work. We know this. So, we have *NO* way to discuss what was happening before a certain point.

Science is separated from philosophy or religion by the scientific method, which is NOT what you are taught in school. Take the average 10 year old. She walks into her room and turns on her lamp by her bed. The bulb flashes on and goes out. She thinks: Ah! The bulb burned out (hypothesis). If I change it, it will be repaired. She changes it and it turns on. This is what you are taught is the "scientific method". In actuality that is nonsense. It is just problem solving any child can do.

The real scientific method relies on a concept called falsifiability. This means that we do not make hypotheses that are not capable of being tested. To do so would *not* be science, it would be speculation, or philosophy or religion. So since we do not (yet) have a way to "look back" (or model) what happened before a certain instant in time, it is NOT scientific to discuss it. What happened before then is anybody's guess. Until we have the math and the theory to let us see back to the beginning and beyond, we will not be able to say *anything* about it. So when somebody asks a scientist what happened before the Big Bang, and she replies "Nothing, nothing existed, no space, no time, no energy, nothing." What she really means is:"As good as nothing. Nothing existed then that we can talk about meaningfully. So effectively nothing was before the big bang (AFAIK)."

Let's say Bing Bang existed.... It would need tremendous amount of atoms to begin with. Maybe Big Bang existed in another realm other than space. However even realms require atoms. Hmmm.. Basically atoms exist inside the atoms..... Would that make any sense? Will that mean the realm and big bang are actually one? So even if there are infinite big bangs, it's still "one" (they're all atoms). Or maybe the realm isn't made of atoms.

I guess the real question is where do all the atoms come from? Is God = the Atom?

First the Big Bang was not big or had a bang. The big bang started smaller the a atom, before the big bang there was no matter, energy, space or time nothing existed, the primordial atom expanded and i the expansion the universe was created along with energy and the four forces of nature.

Big Bang happened within a infinite dark empty void. It is endless, but completely empty. After big bang, it introduced matter, energy, and space-time. The universe is still expanding further into this empty void.

It is extremely difficult to talk about probability with regards to just about any astronomy or cosmology question. After all, we are physically limited from being able to run experiments, view alternatives, collect samples, etc. Its like taking a thimble full of sea water and trying to therefore make assumptions about the worlds oceans. That does not, however, make the study erroneous. Mathematics tells us quite a lot about cosmology. unfortunately, math being a purely human created metaphysical language, this may be leading us widely astray, or it may not. We'll probably never know. Specifically with regards to your question, Brian Greene, world renown cosmologist and physicist, talked about it rather specifically. Heres a link to one of his presentations:

http://www.ted.com/talks/brian_greene_why_is_our_u...

@Swizz:

I empathize with your logic. How could you birth yourself. However, there are enormous varieties of logical conclusions that we think we can make a but mathematically cannot. And things that your logical mind would demand are impossible are frequently calculated, measured, and even witnessed via tests. Virtually all of special and general relativity produces mind benders that, upon first witness, seem Impossible. For example: time is relative. What? how on earth could time be relative? you mean depending on your reference frame, different people may experience different durations of time between landmark moments? that is in fact possible. It has been both mathematically predicted and witnessed that objects traveling at any speed (more noticeably as speeds approach c, the speed of light) or in proximity to any object with mass (more noticeably near more massive objects) actually experiences time at a faster rate than objects not under these circumstances! An experiment was run with 2 clocks, one at the top of a water tower (further from object of mass: earth) and one at the bottom of the water tower (closer to mass). These were atomic clocks with guaranteed accuracy. After a year, the clocks were removed, and the one at the top of the water tower displayed a time that was microseconds behind. Also, With regards to speeds, even in traveling airliners, time calculated on board (at velocity) and time calculated at ground (relative non-velocity) are different enough to warrant calculated alterations. This is but one tiny example of the enormous number of counter-intuitive findings of science. To rely on one's own logic, while useful for daily function, simply is not reliable when it comes to cosmology.

The singularity "big bang" created spacetime.

A potential doesn't need space nor time but the potential must be finite.

The big bang didn't happen. How can everything suddenly explode from nothing? It's just really unbelievable...

WHY DONT YOU TRY TO EAT YOU OWN HAND AND THEN TELL ME. OH GOD WHY dONT YOU LET ME IN. I JUST WANT TO TALK TO YOU.