Black Hole Swarms

It’s been conjectured that the center of the Milky Way is swarming with tens of thousands of black holes. And now we’ve actually seen them.

The core of our galaxy is a wild place. The stars are so densely packed that the night sky would be 500 times brighter. A supermassive black hole, 4 million times the mass of our Sun lurks in the center. It flings nearby stars into extreme slingshot orbits. It consumes anything that gets too close is consumed, burping a blast of X-rays.  We know these things because we see them from our comfortable vantage point 28,000 light years out in the galactic disk. But  there’s one particularly terrible feature of the core of our galaxy that, until now, has only been has only be hypothesized: The central few light years of the Milky Way is thought to contain a vast swarm of smaller black holes that have rained in from the surrounding galaxy.

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