What space objects can have millions of times more mass than our Sun, but they remain invisible? Black holes! Their gravity is so strong that not even light can escape. In this book, you'll learn about one of the amazing wonders of space. As part of the Searchlight Books™ collection, this series explores outer space and sheds light on the question What's Amazing about Space? Fantastic photos, kid-friendly explanations of science concepts, and useful diagrams will help you discover the answers!