scientifically the big bang is impossible, the second law of thermodynamics states that everything is moving from a state or order to disorder not the reverse. The world could not have come from an explosion (disorder) and have progressed to what we have today (order). The Creation explanation suites the law more accurately. That God created a perfect wold and through our sin the earth over time is starting to show the deterioration, global warming, more earthquakes, extinction of animals and plant life,etc. Also when have we ever witnessed an explosion that produced something more organized than what was before the explosion, never. The reason the big bang can't be duplicated is because it is contrary to the laws of the universe.

Unfortunately, no-one really understands because we can't ask the right question in plain language. Time started at the big bang, so 'before' doesn't exist. Its like asking what Mickey Mouse was doing before Walt Disney was born. The creation explanation is (also unfortunately, because it's so much simpler) about as credible as believing that the earth is a flat disk being carried across the universe on the back of a large turtle.