back to the original post....
Short of a deity revealing itself, science -given enough data -could possibly prove the necessity of the existence of a creator (or otherwise).
Science has actually proved false gods of certain descriptions -such as a God who created everything 6,000 years ago (not actually bilical, by the way).
Presently, many believe no creative input was necessary since the Big Bang for all we see to exist, but even that does not mean a creative mind was not responsible for the Big Bang.
We know that certain things had to happen in a certain order after the Big Bang for life to emerge -and for all of its changes -but I do not believe we have enough data to say that there was no creative influence whatsoever even after the Big Bang to cause every event or change.
We are not even certain -from a scientific viewpoint -that other physical life forms from elsewhere did not have a hand in our existence or present form -just as we may someday have a hand in causing life elsewhere.
Many are stuck on the creation vs. evolution issue, but we know that both exist -both happen.
Knowing exactly which was responsible for what at any given point would take a great deal of data -and a profound understanding of how all things interrelate.