Scientists recently made the monumental announcement of the first picture of a black hole at the center of the Milky Way. As surely as the Earth orbits the sun, we orbit that black hole — 26,000 light-years away and 4 million times the mass of the sun, yet less than 20 times the width. It has been a century of black-hole discoveries, including two Nobel prizes for black-hole science in the past few years. This discovery is deserving of a third, with one billion people worldwide tuning in to look together at the first human-procured image of a black hole. Janna Levin, astrophysicist and author, will give a visually guided tour of black holes and the role they play in our past and our future.