‘Einstein’s Shadow’ explores what it takes to snap a black hole’s picture
A new book offers a behind-the-scenes look at the Event Horizon Telescope collaboration

THE BIG PICTURE Scientists hope to image a black hole’s shadow (simulated) to reveal new secrets of gravity. The image expected according to the general theory of relativity (center) differs from that produced if other theories are correct (left and right).
D. Psaltis, A. Broderick