Gravity's Engines

A new understanding of black holes and what they do: “Scharf makes vivid the mind-boggling nature of the universe . . . [an] excellent book.” —The Wall Street Journal

We’ve long understood black holes to be the points at which the universe as we know it comes to an end. Often billions of times more massive than the Sun, they lurk in the inner sanctum of almost every galaxy of stars in the universe....