How the Event Horizon Telescope took first ever image of a black hole

The video explains the challenges of capturing an image of a black hole, which is difficult due to its nature of not allowing light to escape and its small size from an astronomical perspective. To overcome this, scientists connected radio dishes globally, creating a virtual telescope the size of Earth. This international effort involved hundreds of researchers and significant data storage. The result was the first direct visual evidence of a supermassive black hole, showcasing the power of global collaboration and technological innovation.

How long did it take to produce the first image of a black hole, and what were some contributing factors to this duration?

What does the first direct visual evidence of a supermassive black hole reveal about our understanding of the universe?