[Granada]

I've started watching a great doco on Netflix called Black holes - The edge of all we know which is a story of how scientists captured the first image of a black hole.


One statement they made in passing caught my attention. They said in order to capture this image they utilised a number of large and powerful telescopes across the planet and pointed them all at the same time and location to "collect photons". I'm wondering since black holes don't emit anything but Hawking radiation, which photons are they referring to? Could it be the photons emitted by the stuff around the black hole, which is what we ended up seeing in the image they captured?