The first black hole image helped test general relativity in a new way
The Event Horizon Telescope’s snapshot of M87’s black hole once again shows Einstein was right
Simulations of the way light and matter move around the supermassive black hole at the center of galaxy M87, like the one shown here, helped physicists pin down the size of the shadow the black hole casts on surrounding material. That size is crucial in tests of general relativity.
L. Medeiros