The first iconic image of a black hole looked like a fuzzy, orange donut, but now that picture has been sharpened up to a fiery ring, thanks to computer simulations and machine learning.
The black interior of this ring of hot gasses is an area of cosmic weirdness and such strong gravity that nothing, not even light, can escape. It looks much larger and darker in the upgraded image, according to a new report in The Astrophysical Journal Letters.
