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A new study calculates the number of black holes in the universe. It's a lot


Still Waters
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Posted (IP: Staff) ·

Because we can't see black holes, it's hard to know exactly how many are out there in the big, wide Universe.

But that doesn't mean we have no means of trying to figure it out.

Stellar-mass black holes are the collapsed cores of dead massive stars, and new research incorporating how these stars and binaries form and evolve has been able to derive a new estimate of the stellar-mass black hole population of the Universe.

The number is pretty jaw-dropping: 40 quintillion, or 40,000,000,000,000,000,000 black holes, roughly making up 1 percent of all the normal matter in the observable Universe.

https://www.sciencealert.com/new-study-calculates-the-number-of-black-holes-in-the-universe-it-s-a-lot

https://iopscience.iop.org/article/10.3847/1538-4357/ac34fb

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