Their so called ‘Big Bang’ theory is not really so much a theory as just pure conjecture and hypothesis. Its basic assumption today (it was a different assumption some forty years before, even though today our scientists are now trying to forget that fact or pretending that they didn’t theorize a different scenario then), of expanding or exploding cosmic energy giving rise to our universe (and our existence) cannot be proven. Because it cannot answer how those energy "particles" came about (to exist as a so called 'singularity') in the 'first' place 'before' it expanded or exploded.
Some forty or so years ago (from 2012 C.E.) scientist hypothesized that the universe began as a dense mass of matter compressed by its immense gravity which expanded (or exploded depending on how you want to define it), while today (because some time along the way between then and now (in 2012 C.E.) these genius scientists came across something they called black holes which may or may not be black but most certainly are not holes of any sort at all, whether of worms or of leakages into some "parallel" universe which are not necessarily parallel to anything) they are conjecturing that the universe started with nothing or almost nothing (just energy "particles" that doesn’t occupy any 'space' because it has no mass, or something along those lines of spins).
And because of the way they chose to define or hypothesize time and space, they therefore claimed that time and space did not exist until that so called expansion of energy (starting out as a 'singularity' which is equivalent to nothing, or a quantum void, since it has no mass and having no mass it doesn't occupy 'space') some 13.7 billion years (of earth time) ago.
Today they are calling this "awesome" theory the ‘Big Bang from nothing or the universe from nothing,’ and that 'it' created our present physical universe**.
Now what they are saying is that 'before' there was anything, even 'before' space and time itself existed, energy existed (or must have 'existed'). And they are also saying (but not out loud or explicitly though) that nothing existed 'before' energy existed because there is no 'before' energy because time did not exist when energy 'first' 'existed', 'before' it expanded or exploded and created time and space and everything else that is 'existing'. So therefore there couldn't possibly be a 'before' until 'after' that, then only a 'before' could possibly be.
Thus in their devious deceitful self glorifying ways they are saying today that energy is the Creator. And since energy is 'nothing' (not having any mass) and since according to this Big Bang theory, energy created the universe (or everything) therefore nothing created the universe or the universe was created from nothing by nothing. In simpler term it would say that nothing created everything. Now can you begin to see how totally "awesome" this 'new' theory of the Big Bang from nothing is.
Now being no rocket scientist I really can't be expected to understand how this energy having no mass would have itself compressed (by a gravity that didn't exist because there was no mass) into a singularity of 'nothing' or a quantum 'void', not occupying any space. This of course according to these brilliant scientists would not be strange since space does not exist then; at least not until this 'nothing' decided to expand (or explode whichever way you want to choose to define it as doing) to create everything including space and time.
Now I am sure some brilliant super intelligent rocket scientist will correct me and say that this 'nothing' did not decide to expand but that it just did; because nothing cannot decide anything and since time did not 'exist' then, 'when' couldn't possibly 'exist' and even 'exist' didn't 'exist' because 'exist' have no conceptual meaning because there was just 'nothing'. In fact there was not even 'nothing' because 'no' 'conceptual' 'concept' 'can' 'exist' 'when' 'nothing' 'existed', 'nothing' 'itself' 'also' 'is' 'included'. But that won't really help clueless me because if this nothing did not decide to expand when it did then why would it expand when it did (which according to science was some 13.7 billion years or there about) when it could have expanded way 'before', yes way, way 'before' 'before' existed. All these sounds to me like someone is trying to pull a fast one. But then what do I know, being no rocket scientist?
How clever they are at telling spins and lies so that they may glory in how intelligent and enlightened they are, and therefore how stupid they (and all those who believe their spins to arrogantly boast along with them) have become, to so totally lie to themselves and then to totally believe their own lies and twisted spins.