It is so far away that the shadow of the black hole- the dark signature of the event horizon, which is the point beyond which not even light can escape-is just 40 microarcseconds wide. The image presented this week depicts the black hole at the center of the galaxy Messier 87, or M87, which is around 55 million light-years away. "I really wanted to come here first after the announcement, as my new home," she told the audience. Katie Bouman, who will join Caltech's faculty as an assistant professor of computing and mathematical sciences in the Division of Engineering and Applied Science in June, is a member of the Event Horizon Telescope (EHT) team and worked on the computational imaging that helped to tease an image from the noisy data captured by EHT's telescopes. A member of the team that captured the world's imagination this week by unveiling the first-ever image of a black hole explained the science and engineering behind the image to a packed audience on Caltech's campus Friday.
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