A Crack in EverythingWhat is space? What is time? Where did the universe come from? The answers to mankinds most enduring questions may lie in sciences greatest enigma: black holes. A black hole is a region of space where gravity is so strong that nothing, not even light, can escape. This can occur when a star approaches the end of its life. Unable to generate enough heat to maintain its outer layers, it shrinks catastrophically down to an infinitely dense point. When