There are 40 billion billions of Black Holes in the Universe!

With a new computational approach, SISSA researchers have been able to make the fascinating calculation. Moreover, according to their work, around 1% of the overall ordinary (baryonic) matter is locked up in stellar mass black holes. Their results have just been published in the prestigious 'The Astrophysical Journal'. How many black holes are out there in the Universe? This is one of the most relevant and pressing questions in modern astrophysics and cosmology.

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Nicola Vuolo (nvuolo)
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nvuolo@sissa.it