A leap of faith is required but looking to Science can make the leap a little shorter.
If you're really interested check out
Magis Center. - "Science And Faith" link. The guy running it is Fr. Robert Spitzer, trained in Physics and Philosophy and (obviously) Theology, formerly President of Gonzaga University. So he's the real deal. There's also a bunch of clips on YouTube if you prefer that. Interesting looking links to Cosmology on the "Browse By Topic" tab - haven't gotten around to reading them myself.