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Image of Sagittarius A* (or Sgr A* for short), the first direct visual evidence of the supermassive black hole at the center of our galaxy. EHT Collaboration This image of Sagittarius A* is the first direct visual evidence of the presence of a supermassive black hole at the center of our galaxy. It was captured by the Event Horizon Telescope, an array of radio telescopes named after the "event horizon," the boundary of the black hole beyond which no light can escape.