Although most black holes are believed to be associated with stellar evolution (stellar remnants), strictly speaking there are other theoretical methods that could create a black hole which merit a mention - for instance primordial black holes from quantum fluctuations in the early universe, natural and artificial high energy particle collisions, and possible ongoing accumulation of matter onto lighter stellar remnants.
To understand why only the more massive stars (several solar masses) would create a black hole, consider the forces at work: black holes are created when the outward pressure is insufficient to balance against the inward pull of gravity. If the outward pressure is insufficient, a black hole might form. For most of a star's lifetime, collapse is prevented by thermal pressure from nuclear processes which generate significant amounts of heat. Once a star's fuel is exhausted (and allowing for other mechanisms which throw off some of the mass) this effect can no longer balance against the pull of gravity, and some quantum effects may provide the necessary resistance to further gravitational compression; these are referred to as degeneracy pressures. In the case of a large star which has shrunk and cooled to the white dwarf stage, electron degeneracy pressure holds against further collapse; this pressure is a consequence of the Pauli exclusion principle which prevents electrons from occupying the same states (such as already filled energy levels). However, for masses above roughly 1.4 solar masses (called the Chandrasekhar limit) the white dwarf is too massive to resist further collapse and the remnant may collapse further into a neutron star. In this case, the nuclear protons have captured electrons and become neutrons with further collapse resisted by nucleon degeneracy pressure. The upper limit for a mass of a neutron star is not exactly known (see Tolman-Oppenheimer-Volkoff limit) but above this limit, the degeneracy pressure of neutrons is insufficent to prevent further collapse and an object of even greater density may form (such as a 'quark star'). In the case where the mass is sufficient to overcome all forces resisting further compression, gravity will dominate and a black hole may form, with a singularity of infinite compression or density.
No. Only the most massive stars form black holes. When the sun dies it will form a white dwarf.
There are more white dwarfs. Only the most massive stars can form black holes. White dwarfs form from low to medium mass stars, which far outnumber the supermassive ones.
Black holes are formed by super massive stars when they collapse. Less massive stars will form neutron stars. Therefore, the original size and mass of the star will determine if a black hole will be created when the star collapses.
Yes, both black holes and neutron stars are remnants of the death of massive stars. Neutron stars form when the core of a massive star collapses but does not produce a black hole. Black holes are formed when the core of a massive star collapses beyond the neutron star stage.
Most massive stars will eventually form black holes after they go through their life cycle of burning through their nuclear fuel, leading to a supernova explosion. The remnants of the supernova collapse into a dense core, which, if above a certain mass threshold, will become a black hole due to the force of gravity overwhelming other forces.
Yes. When the most massive stars die, their cores collapse to form black holes.
Most black holes are believed to form when very massive stars die.
All dead big stars do not form black holes because sometimes the collapse of the star is stopped at a smaller size before it becomes a black hole.
Yes. When the most massive stars die, their cores collapse to form black holes.
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.
False. Medium-sized stars become white dwarfs. Only the most massive stars form black holes.
Mostly in galaxies, where they can form Super Massive Black Holes.
No. Only the most massive stars form black holes. When the sun dies it will form a white dwarf.
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.
Most black holes are stellar mass black holes with masses comparable to those of large stars as they form from the collapse of massive stars. Scientists know of the existence of supermassive black holes that are millions to billions of times the mass of our sun and can be found in the centers of most galaxies. Scientists still do not know how these black holes become so massive.
There are more white dwarfs. Only the most massive stars can form black holes. White dwarfs form from low to medium mass stars, which far outnumber the supermassive ones.
Black holes are formed by super massive stars when they collapse. Less massive stars will form neutron stars. Therefore, the original size and mass of the star will determine if a black hole will be created when the star collapses.