In order for there to even be a chance of a formation of a stellar black hole(one of the largest types of black holes), a supermassive star must be present. The definition of a supermassive star is a star with a mass more than 50 times the mass of the sun(Dictionary.com), which is approximately 9.9455 x (10 to the power of 31) kilograms, and that's only the minimum needed for a stellar black hole. All stars stay “alive” through the nuclear fusion reactions taking place in the star. These reactions of course produce energy which help to keep a star from collapsing in on itself, but eventually they will run out of fuel. For a supermassive star, running out of fuel means instead of forming elements like helium and carbon(which produces the energy needed to not …show more content…
Supermassive black holes on the other hand are black holes found at the center of every galaxy. They are believed to be formed at the time of a galaxy's creation. Currently the largest supermassive black hole recorded is S5 0014+81. It clocks in at 40 billions times the mass of our sun, and is 236.7 billion kilometers diameter wise.
When “black hole” was coined in 1967 by John Wheeler, no one was willing to believe such an exotic thing existed, especially since no visual evidence could be provided, all of it was simply a theory. Surprisingly, before 1964, no one even gave a serious suggestion about what type of evidence astronomers should be looking for. But the idea of black holes was not put down, because in the same year black hole was coined, Jocelyn Bell, a graduate research student of Antony Hewish at the university of cambridge, detected unknown pulses of radio waves emanating from space. The first explanation of this was that we discovered extraterrestrial life trying to contact us, but eventually this idea was disproved. If it was another life form we would expect them to