Just how big is the universe? Seeking answers, astrobiologist Caleb Scharf goes on an epic tour; drawing on cutting-edge science, he begins at the limits of the observable universe—about 93 billion light-years—and ends in the subatomic realm, where the fabric of space-time itself confounds the rules of physics. Along the way, Scharf stops at the core of the Milky Way, the surface of a rogue planet, on the back of an elephant, and in a sea of jostling quarks. Thought-provoking and inspiring, Scharf's text is perfectly paired with Ron Miller's vivid, hyper-realistic illustrations.