The first image of the supermassive black hole at the center of the Milky Way galaxy, known as Sagittarius A* (Sgr A*, pronounced “sadge-ay-star”), was generated by a multi-institution collaboration that includes a Caltech-led imaging team. The international research team, called the Event Horizon Telescope Collaboration, consists of more than 300 researchers from 80 institutions around the world. Caltech’s Katherine Bouman, PhD, headed up the imaging team, with support from former Caltech postdoctoral researcher He Sun, PhD, and current Caltech postdoctoral researchers Aviad Levis, PhD, and Junhan Kim, PhD.