Portrait of a black hole: Here's how the event horizon telescope team pieced together a now-famous image

Last April, a Research Team That I'M Part of Unveiled a Picture that most astronomers never dreamed they would see: one of a massive black hole at the center of a distant galaxy. Many were shocked that we had pulled off this feat. To accomplish it, our team had to build a virtual telescope the size of the globe and pioneer new techniques in radio astronomy.