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Astronomers Find a Fascinating Cluster of Stars Filled With Small Black Holes – ScienceAlert

A dense clump of stars a few thousand light-years away has been harbouring a surprise in its core. Rather than one relatively chunky black hole, astronomers have…

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A dense clump of stars a few thousand light-years away has been harbouring a surprise in its core. Rather than one relatively chunky black hole, astronomers have found that the globular cluster NGC 6397 is wrapped around a cluster of smaller, stellar-mass ones.
This could not only help us better understand the formation of larger black holes, it suggests that globular clusters could be of great interest to gravitational wave astronomy as the black holes inevitably draw closer together towards collision.

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