This is the first ever photograph of a black hole. Not what you expected? Well, to a VERY small degree, that’s because I lied to you in my last post when I said that it would be the black hole at the center of our Milky Way galaxy, Sag A*. This is actually the center of M87, a supermassive galaxy in the constellation Virgo. Although it is about 53 million light-years away, it is apparently large enough that it made a better target than Sag A*. But the EHT team reports that an image of Sag A* is coming soon.
If you want to learn more about the structure of a black hole and the “event horizon”, here’s a video that I found helpful: https://www.youtube.com/watch?v=zUyH3XhpLTo