Koay, Jun Yi, Kevin, (ASIAA)
The first results from the Event Horizon Telescope revealed the first images of the shadow of a supermassive black hole, observed in the centre of galaxy M87. In this talk, I briefly describe the observations, data processing, imaging, and interpretation of the results. The image of the shadow confines 6.5 billion solar masses, consistent with the stellar dynamical mass, within the photon orbit of the black hole. This provides the strongest evidence to date for the existence of supermassive black holes.