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Tech & Science There would be 40,000,000,000,000,000 black holes in the

05:10  20 january  2022
05:10  20 january  2022 Source:   numerama.com

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  Il y aurait 40 000 000 000 000 000 000 trous noirs dans l’Univers © Universe provided by Numerama

based on the estimates of a team of scientists, there would be 40 billion billions of black holes in the universe observable. 40 000 000 000 000 000,000. It's a lot of zeros (19).

According to the estimates of a team of scientists, there would be 40 billion billions of black holes in the observable universe. 40 000 000 000 000 000,000. It's a lot of zeros (19).

How many black holes are there in the observable universe? 40 billion billions. Or 40 000 000 000 000 000 (yes, it makes 19 zeros). Or 40 x 10 power 18. It is in any case the estimate of scientists, in the astrophysical Journal , January 12, 2022. The study is relayed by the international international school Advanced Studies (Sissa) of Trieste in Italy.

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"The training and evolution of black holes in the universe are one of the major problems of modern research in astrophysics and cosmology," recall the authors of the text. In this context, be able to quantify this population of celestial objects is important.

Un trou noir perplexe. // Source : Nasa ; Nino Barbey pour Numerama (montage) © Provided by Numerama A perplexed black hole. // Source: NASA; Nino Barbey for Numerama (assembly)

This scientific article is actually the first of a series designed to study the demographics of black holes. The researchers are concentrated in particular on stellar black holes (which usually represent from 10 to 24 times the mass of the sun, and are derived from stars very massive arrived at the end of life). They conclude that a significant amount of baryonic matter (ordinary matter, as opposed to non-baricolyonic matter, such as the black matter ) of the universe is housed in stellar mass holes: 1%.

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to go further There would be about 200,000,000,000,000,000,000,000 stars in the

universe, they estimate at 40 billion billion the number of black holes in the observable universe , described in the Sissa Communiqué as "a sphere with a diameter of about 90 billion light-years".

Finally, the authors are interested in the different ways in which black holes are formed from isolated stars, binary systems or stars clusters. They indicate that the most massive stellar black holes would be keen mainly, according to them, in stellar clusters (stars groups, bound by gravitation), during dynamic events.

Continuous discussion on Numerama

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This is interesting!