In a film released by NASA, eight stars stretch and deform before being swallowed up by a black hole 1 million times the size of the Sun. These simulations show that the destruction and survival of stars depend on their initial density
NASA has released a video showing a large black hole 1 million times our Sun which swallows 8 stars. A simulation in which we can observe them approaching the event horizon, to then be deformed and stretched by the great gravity of the black hole. Some completely fall apart in a huge flow of gas: this phenomenon is called tidal disruption. Others, however, are only partially destroyed, retaining their mass and returning to their original shape after approaching the black hole.
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Black holes: the survival of a star depends on its density
This division between stars that disintegrate completely and others that manage to survive would not be related to their mass, but rather to density. Scientists are using these computer simulations to understand how the mass of black holes and the density of stars influence tidal disruption events. The results will help them estimate how often these phenomena occur in the universe, helping them process images even more accurate of these close encounters.
Physical effects of the theory of relativity
The simulations, carried out by a member of the Max Planck Institute for Astrophysics in Garchingin Germany, are the first to combine the physical effects of Einstein’s theory of relativity with astronomical models regarding stellar density. The stars examined in the video are about one-tenth to 10 times the mass of the Sun. Taeho Ryu and his research team will continue to elaborate new models which will allow us to understand something more about one of the greatest mysteries of modern physics: black holes. In the meantime, we invite you to read our recent article in which we reveal 10 interesting curiosities about black holes. Below is the video:
Source
 video released by NASA){kind=link}