about novas, supernovas, black holes?

Question

if a black hole forms, what happens when the mass increases to the explosive power of it/s condensed mass? does it move outward to form a nova or supernova at some point when the mass becomes greater than its ability to hold the mass? english only, since I'm not an astro-physisist?

Answer 1

A black hole never reaches an upper limit. It can suck in the equivalent mass of galaxies and the only thing that will change is that the event horizon will increase in size.

You see, a regular star keeps from collapsing by virtue of the intense heat and energy released in the fusion fires at its core. As the hydrogen fuel in the core runs out, the core shrinks(because of the lower energy output) and the increased density makes the core hotter and ignites a shell of hydrogen outside the core and the star expands in size to a red giant. As the helium fuel is used up, other reactions take place, and it builds up through many of the more common elements (Carbon, Oxygen, etc.).Eventually, all the fuel is used up and it settles down to be a white dwarf and remains so until the energy dies down and it effectively becomes a very dense, very massive black body.

If the star is really massive, as it runs out of fuel, its core shrinks very quickly and may instigate a supernova. Most of the outer shell is blown off into space and what is usually left is a neutron star. The gravity is so intense as to crush atoms down to the size of their nuclei...effectively making a neutron star a ball of atomic nuclei and possibly sub-atomic particles. The only thing keeping it from collapsing further is the reticence of nuclear particles to be mashed together...but even that has limits.

If that limit is broached, the mass of the entire neutron star collapses into a point (singularity) of equal mass. The event horizon (the limit outside of which neither matter nor light may escape) remains where the surface of the neutron star would have been had it not been too massive to keep itself solid. As more mass is added, the event horizon expands, and there is no upper limit known. In the center of galaxies, there are supposed to be supermassive black holes with masses equivalent to billions of stars, and they are only getting bigger.

Answer 2

Black holes are just things that have zero volume yet gravity is infinite in the center. I'll just tell you this the best I can without any complicated crap people try to explain to ya!!!

When star that has a solar mass of over 3.2, ((solar mass is the size of our sun, so a star would have to be over 3.2 times larger then the sun)) and it runs out of energy to burn, it goes into a supernova, it realeases all the gasses and the core of iron and other metals start colapsing and keep on colapsing into each other until gravity is no longer boundry, the mass of gravity sucks in the gass and the gravity becomes more. It will keep on colapsing until it becomes a black hole, which as you know is a big mass killer gravity!!!

I honestly don't know how to explain it, but I hoped I helped some!!!