A few days ago, scientists announced the very first real image of a black hole (as opposed to one of those “artist’s conception” images that you see everywhere).

Black hole Messier 87 (aka M87) (credit)
This was a very nice surprise, because I was not aware any such project was underway, and I would have thought the obstacles were too great. The main problem with imaging black holes is that black holes are really far away. You would have to “zoom in and enhance” many many times to get the image above. Let’s compare it to other examples of extreme zooming.