French astrophysicist Jean-Pierre Luminet created the first-ever simulation of a black hole, published in Astronomy and Astrophysics. Using an IBM 7040 computer and hand-plotting techniques with India ink, he calculated how light from an accretion disk would be distorted by gravity, producing a "distorted eye" image remarkably similar to modern direct imaging
For reference, here's our first radio telescope computed image
https://public.nrao.edu/gallery/astronomers-capture-first-image-of-a-black-hole/
A variant showing magnetic field lines;
https://www.eso.org/public/images/eso2105c/
And when you're done thinking about black holes you have this;
https://public.nrao.edu/news/alma-detects-extremely-abundant-alcohol-in-interstellar-comet-3i-atlas/
There's booze in them thar comets!
It's wood alcohol. It will make you go blind.
Rocket fuel!