Through my earlier posts, I explained that after chandrashekhar limit, white dwarfs starts to form and after Tolman-Oppenheimer-Volkoff limit, Neutron star starts to form.

But, real magic starts when the mass of star goes above the Tolman-Oppenheimer-Volkoff limit. When mass goes above it, black holes begin to form.

Stellar black holes form when the center of a very massive star collapses in upon itself. This collapse also causes a supernova, or an exploding star, that blasts part of the star into space.

If the mass of the compressed remnant of the star exceeds about 3 - 4 solar masses, then even the degeneracy pressure of neutrons is insufficient to halt the collapse and, instead of forming a neutron star, the core collapses completely into a gravitational singularity, a single point containing all the mass of the entire original star. The gravity in such a phenomenon is so strong that it overwhelms all other forces, to the extent that even light cannot escape from it, hence the name black hole. Thus, the gravity of a body just a few times denser than a neutron star would result in its inevitable further collapse into a black hole.

Real Pic of Black Hole
Real Pic of Black Hole
Primordial black holes are thought to have formed in the early universe, soon after the big bang.

Scientists think supermassive black holes formed at the same time as the galaxy they are in. The size of the supermassive black hole is related to the size and mass of the galaxy it is in.

To know basics of quantum world, astronomy and space exploration you can check out my book "Through the wormhole" on amazon kindle.

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                                                                    -Ratnadeep Das Choudhury
                                                      Founder and Writer of The Dynamic Frequency