There are 40 billion billions 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’. Lumen Boco (SISSA) explains the result in this video press release. Check out the full paper here (Open access):