black holes are formed due to gravitational collapse of massive stars .
Gravitational collapse occur when a star has less fuel to maintain it's internal temp. by nuclear synthesis or when a star receive extra matter in such a way that doesn't raise it's core temperature . in both these cases star's temp. is not sufficiently high to prevent collapsing under it's own gravity.
But this isn't the only way by which a black hole can be formed
primordial black hole is a hypothetical black hole which is not formed by gravitational collapse of a massive star but by extreme density.
in early stages of big bang pressure and temperature were extremely high and in these circumstances, simple fluctuation of density of matter can form a local region that is dense enough to form a black hole
Probably stellar mass black holes
Hawking radiation is a form of energy that is theorized to be emitted by black holes. It is named after physicist Stephen Hawking, who proposed its existence due to quantum effects near a black hole's event horizon.
Yes it is theorized that black holes constantly emit radiation in the form of thermal energy (Heat) also called Hawking radiation and black-body radiation.
Yes. There is a supermassive black hole at the center of the galaxy and a number of stellar mass black holes through the rest of it.
No. Only the most massive stars form black holes. When the sun dies it will form a white dwarf.
no because black holes can only form through supernovas.
Probably stellar mass black holes
The black holes from Gamma ray usually burst because of their energetic form.
Black holes are sort of the final stage of stellar evolution; they don't form much else. Two black holes may merge to form a larger one, and after a very, very long time, they will evaporate.
Most black holes form when massive stars exhaust their fuel and their cores collapse. There are also supermassive black holes at the centers of most galaxies. Scientists are not sure how supermassive black holes form.
Most black holes are believed to form when very massive stars die.
Black holes are outside the confines of both the Earth and the Solar System, the passing of our year does not affect when they form.
If five black holes came together they would merge to form a single black hole with a mass equal to the sum of the masses of the five original black holes.
Yes. When the most massive stars die, their cores collapse to form black holes.
Black holes form when massive stars collapse under their own gravity. The intense gravitational pull of a black hole traps everything, including light. Black holes are hot because of the high temperatures and energy generated by the matter falling into them, which creates intense radiation and heat.
Mostly the center of the galaxy.
No. Most black holes form when an extremely massive star dies and the core collapses, becoming a black hole.