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An image of stellar-mass black holes surrounding Sagittarius A*, the supermassive black hole at the center of the Milky Way | Nature and Hailey, et. al.
Astrophysics

Hundreds — Perhaps Thousands — of Black Holes Occupy the Center of the Milky Way

Data from the Chandra X-ray Observatory suggests clusters of stellar-mass black holes surround Sagittarius A*, the supermassive black hole at the center of our galaxy.

Illustration showing Sagittarius A* surrounded by a cloud of dust and gas within which are 12 small black holes. The takeout shows the 12 black are black hole binaries. | Columbia University