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Sagittarius A*

The black hole at the center of our galaxy.
The black hole at the center of our galaxy. Image: EHT Collaboration

The Event Horizon Collaboration produced an image of the black hole at the center of our galaxy this year, a supermassive black hole named Sagittarius A* (pronounced A-star). The bright ring around the 4-million-solar-mass black hole is superheated material.

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