How did the Universe come to be? Theists posit that God must have been the initial cause of the origin of the Universe, however, modern physics and cosmology suggest that the Universe came from nothing and is self sustaining. Eminent physicist and cosmologist Lawrence Krauss gives quite an entertaining, yet highly informative, talk at AAI 2009 which addresses this exact issue and expounds more fully. For those concerned with what the real science shows and how we get something from nothing, along with an insightful lecture on the modern picture of cosmology and how it has changed our views, or if you just love cosmology like I do, please watch this educational lecture by Krauss at: http://www.youtube.com/watch?v=7ImvlS8PLIo
On a side note, some popular physics titles I highly recommend are:
Endless Universe: Beyond the Big Bang — Rewriting Cosmic History by Paul J. Steinhardt and Neil Turok.
The Cosmic Landscape: String Theory and the Illusion of Intelligent Design by Leonard Susskind
Einstein: His Life and Universe by Walter Isaacson
QED: The Strange Theory of Light and Matter (Princeton Science Library) by Richard P. Feynman and A. Zee
The Feynman Lectures on Physics including Feynman’s Tips on Physics: The Definitive and Extended Edition by Richard P. Feynman, Robert B. Leighton, and Matthew Sands
The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory by Brian Greene
The Trouble With Physics: The Rise of String Theory, The Fall of a Science, and What Comes Next by Lee Smolin
Parallel Worlds: A Journey Through Creation, Higher Dimensions, and the Future of the Cosmos by Michio Kaku
The Road to Reality: A Complete Guide to the Laws of the Universe by Roger Penrose
The Comprehensible Cosmos: Where Do the Laws of Physics Come From? by Victor J. Stenger
These are just a list of my favorites. Some are more challenging than others, but if you love to learn, and you want to know about the origin of the Universe, including why we exist at all, these books will quench your thirst for better understanding while simultaneously fueling your imagination and desire to learn more! Happy reading!