I consider myself a scientific Christian. Science is built upon cause and effect. And yes, nobody can tell me how the original mass came to be, nor why it suddenly, absent apparently of any outside Force, went critical. But I know.
My brother is very scientifically minded as well.....he came to the conclusion that with all the science we have there will always be another element coming into the fray and that some things are not explainable because you can never get to the "end" using science...... "By Faith" we believe that God spoke and it was done.....hard to 'explain' a word spoken can make something from nothing....but it happened.