how is a black hole created?

Question

I heard a black hole is created by a star that burns out is this true?
I heard that gravity is no more so the star would crush into a small molocule creating a chain reaction resulting in the black hole? Any information will help, thanks.

Answer 1

A black hole is created by a star that was atleast 3x more massive than our Sun. When the star dies, hydrostatic equilibrium ceases to exist and gravity wins. GRAVITY IS ALWAYS AROUND!!! The star then implodes and collapses on itself. It gets to the point where electrons are touching electrons. It is so hot because of all the energy in one spot that photodisintegration occurs, tearing the molecules apart. Shortly afterwards, an explosion occurs with a bright light, a supernova. The remains of this implosion/explosion supernova is a black hole.

Now for those that talked about the size of a black hole. Every black hole is the same size. They are all the size of pinpoints. They are tiny. It is their event horizon that is small or large. The more massive a black hole, the larger the event horizon is. Everything inside this event horizon will be sucked in by the black hole and any light inside the event horizon cannot escape. The mass of a black hole is determined by how much energy it has absorbed.

Answer 2

The black hole is created not only when a star burns out, but when it collapses as a result. A star is so big, and has so much gravity that it would normally collapse into a black hole immediately, but the heat from burning its hydrogen fuel holds it up (since heat expands all matter). When the hydrogen runs out, it cools enough to collapse. It collapses far enough for its escape velocity to exceed the speed of light, then nothing can escape.

The collapse of the star's core is so violent that it explodes the outer layers of the star, so it's seen as a supernova. If the core is above a critical mass, it becomes a black hole, otherwise becomes a neutron star. If the star itself is below an even lower critical mass, the collapse is slow and it becomes a white dwarf.

Answer 3

In theory, there are three types of black holes: large, medium and small. The large type are at the center of galaxies like our own Milky Way and have enough gravitational force to hold the galaxy together. These have been detected. The medium size is created when a very large star blows up in a supernova explosion. Most supernovae only produce neutron stars, but a supernova of an extremely large star can produce a black hole. These have also been indirectly detected. The small type, primordial black holes, are left over from the big bang that created the universe. These are theoretical and have not been detected.

Answer 4

A black hole is created after a star dies. A star, like our Sun, is created from Hydrogen and Helium. The reactions that make it burn is a extremely complex process of Hydrogen becoming Helium. When the star begins to loose its fuel (Hydrogen) it starts to grow in size. This means the star is beginning to die. Then the star begins to shrink to a very small size, this way increasing its gravity. The culmination of this process is called Supernova, a big explosion of this star. This is when all the remaining chemical elements of a star - substance, are "thrown away" and the remaining of the star - anti substance, creates the black holes, that have an extremely big gravity that attracts all the objects near by.

Answer 5

A Black Hole is a spherical region (volume) of space surrounding a Singularity where the gravity of the Singularity is so strong that everything (including light) gets pulled down into the Singularity (hence the use of the term "Hole"); and nothing (not even light) can escape the gravitational pull of the Singularity (hence the use of the term "Black"). The farthest distance from the Singularity where light cannot escape is called the Event Horizon. The Event Horizon defines the outer boundary of the Black Hole. A Singularity is a point in space with no volume and infinite density. It is formed from the collapse of a giant star (many times the mass of our own Sun). The gravity of this star is so strong that the collapse continues past the point of maximum atomic density (protons, neutrons, and electrons touching) to a point of no volume and infinite density. The reason the gravity of the Black Hole at and inside the Event Horizon is so strong is because it is so close to the mass of the Singularity. And, as you know, the closer you get to the center of mass of an object, the stronger the gravitational pull of that object. The diameter of a lower-end Super-Massive Black Hole (100,000 times the mass of our own Sun) is about 190,000 miles. Less than the distance from the Earth to the Moon. The Super-Massive Black Hole at the center of our Milky Way Galaxy could fit between the Earth and the Sun. .

Answer 6

A black hole is created when the density of matter in a small volume is so great that it tears the fabric of space-time.

Most common are burnt out stars of sufficient mass. Miniature black holes also exist, and are created differently.

There is no chain reaction in a small molecule, however. That terminology is incorrect.

Answer 7

If I remember right, a black hole is formed when a star of sufficient mass implodes. I seem to remember that there is an explosion of outer star material first which causes the interior part of the star to implode until gravity takes over and compresses it to a singularity.

Answer 8

Yes, that's true. Black holes are probably created by a star that burns out... Sorry, got no more black info that that...lol

Answer 9

They just confirmed that at the center of all galaxies is a black hole.Some active some not.They are saying that black holes are what forms galaxies.Drawing matter together,igniting stars and creating planets.

Answer 10

Kinda but not really,
imagine an object with such an enormous concentration of mass in such a small radius that its escape velocity was greater than the velocity of light. Then, since nothing can go faster than light, nothing can escape the object's gravitational field. Even a beam of light would be pulled back by gravity and would be unable to escape.