An article published in the journal “Astrophysical Journal Letter” describes the best observation ever made of a ring of gas and dust surrounding a supermassive black hole. A team of astronomers used the ALMA radio telescope to observe the active galactic nucleus (AGN) of the M77 spiral galaxy that emits the intense electromagnetic radiation detected. This is the definitive proof of what was initially proposed as a theoretical concept for which increasingly clearer evidence was collected over time up to that presented in this research.