They caught the shadow. They heard the ring. Now they want to go there. A wild plan to reach a black hole at one-third the speed of light. Cosimo Bambi, an astrophysicist from Fudan University in China, knows the idea sounds unhinged. But he also remembers when people laughed at the notion of spotting a black hole’s silhouette or catching a gravitational wave. On April 10, 2019, the Eve... [3159 chars]