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The astonishing science of black holes, and their role in understanding the history and future of our universe.Black holes are the most extreme objects in the universe, yet every galaxy harbors a black hole at its center. In Einstein's Monsters, distinguished astronomer Chris Impey builds on this profound discovery to explore questions at the cutting edge of cosmology: Which came first, the galaxy or its central black hole? What happens if you travel into a black hole?Impey chronicles the role black holes have played in theoretical physics -- from confirming Einstein's equations for general relativity to testing string theory. He then describes the phenomena that scientists have witnessed while observing black holes: dozens of stars swarming like bees around the dark object at the center of our galaxy; black holes performing gravitational waltzes with normal stars; the cymbal clash of two black holes colliding, releasing ripples in spacetime. Einstein's Monsters is the incredible story of one of the most enigmatic entities in nature. 68 illustrations