Ptolemy Tompkins, collaborator on the New York Times bestselling Proof of Heaven and Proof of Angels, meets with an astrophysicist and delivers a stunning answer to the world's oldest question: God is real, and science proves it. Proof of God is the unlikely story of how this serious scientist and this broken writer, in a series of conversations stretching over several months, come to understand that the universe—from the smallest sub-atomic particles that make up everything in existence to the farthest reaches of the universe—bears evidence of a creator. In short, God not only exists, but science gives us tools to know this. Proof of God shows how science and religion both point to the same stunning and world-changing truth: God is real.