The concept that the universe is expanding, gives rise to the concept that it has originated from a single source and has expanded to its current position and will in turn carry on expanding from this point onwards seems to me to have some very basic flaws which not only prove the concept is wrong but actually indicate only one possible alternative.
Time.
Firstly and most importantly is the concept of time. If we look at time itself we find that time is a measurement based purely on distance travelled. E.g. If a ball falls from a cliff, It would be quite easy to determine how long it would take to fall due to gravity. So what if gravity didn't exist yet? No measurement can be made. No space/distance can be measured and therefore no distance can be determined. And so the same paradigm exists with the concept of the big bang. If in the initial stages of the universes 'expansion', where the universe is supposed to expand into a space, there has to be a space in which to expand into. If the universe itself is at the point at which gravity and mass have not been formed there can only be one position, one singularity, one energy, and no time and no space. It is under this theory that our current understanding lies and as such seems problematic in concept alone let alone the methods employed to bring this to a 'measurable' scientific understanding.
Space.
Space or distance is a concept that allows us to percieve in our minds a 3D version of reality due to the fact that we perceive reality in 3D. If the initial stages of the universe were actually where only one single object existed then in that realm of existence, distance is not yet a reference. This is due to the fact that there is only one reference or position in that realm. The definition of the universes creation under this concept occurs if the single entity becomes more than one entity. In other words for any big bang to occur in any realm an energy must either divide or multiply.
Matter.
For matter to exist or to even perceive properties of any kind. One has to have a reference to work from and therefore gauge the reference to the subject in question. At the event of a halving or doubling of any energy is the birth of time and space in a single event. One cannot exist without the other. So observation itself relies upon these circumstances to perceive reality. Therefore I propose that the big bang theory cannot be the case due to the impossibility of energy existing without time and space. In simple terms an energy in any realm is only defined by its reference of separation from that realm. If there is no realm then there cannot be any energy with which to compare it to. Conversely If there is already time and space to expand into - only then can you have a big bang.
Conclusion.
My postulation is based around these precepts, that space or what we call a vacuum is proof of a constant flow of space time. So we see the universe as expanding but in fact it is, at its outer extremes also contracting, while energy from many millennia ago expires on the edge of our space-time it can only go to one possible place. The centre of the universe or current gravity field. Therefore creating an infinite cycle. So to me it is not a Big-Bang (singular) but a Constant Flow which in itself is a singularity. This is therefore continuously halving and doubling simultaneously. The universe may be perceived as energy flowing from a perpetual source due to the fact that there is no-where else for it to go. This is a singularity. There is one extremely hard concept to grasp here. It is infinite due to a lack of loss of energy. This is not as impossible as the concept that a bang occurred without time and space.