A black hole forms when any object reaches a certain critical density, and its gravity causes it to collapse to an almost infinitely small pinpoint. Stellar-mass black holes form when a massive star can no longer produce energy in its core. With the radiation from its nuclear reactions to keep the star "puffed up," gravity causes the core to collapse. The star's outer layers may blast away into space, or they may fall into the black hole to make it heavier. Astronomers aren't certain how supermassive black holes form. They may form from the collapse of large clouds of gas, or from the mergers of many smaller black holes, or a combination of events
When a huge star dies it's core becomes so dense it's own gravity starts to crush and collapse inwards the heart of a black hole is called the (Singularity)
when an red gaint star dies then it loses all its gaseous material and an empty space form through which light also cannot escape then they are called as black holes
when a star loses enough molecules that it cannot sustain its massive size, its own gravity forces the star to collapse on itself and create a neutron star. but if the original star is large enough, the neutron star's neutrons will be crushed forming a black hole
There are several ways that a black hole can be born.
The most common way a black hole forms is when a large star collapses. Stars will collapse when they don't have enough fuel to resist their own gravity. Usually either the electron or neutron degeneracy pressure will stop their collapse, but if the star is large enough, it will collapse farther than a neutron star. It will collapse until it can't collapse any more. When this happens, a black hole is created.
Black holes can be created by extremely high energy collisions, but that only happened right after the big bang.
A black hole begins when a large star (Super giant) reaches the end of its life, and explodes (called supernova). The core of the star will be left over, and depending on how big the supernova was, it may collapse in on itself under its own gravity, until it starts sucking in other matter as well. Black holes don't actually grow, and can last for millions of years until they evaporate.
Black holes are basically an event which happens before a star dies. They are formed from stars or other massive objects if the object collapses on their own gravity. During most of a star's lifetime, the core generates the stars energy. The stars radiation gives off an outward pressure that balances out the gravity pushing down on it (the bigger the star the more powerful the gravity.)
If the stars fuel runs out there will be no more outward pressure allowing the gravity to compress the star inward. As the star gets compressed the core begins to heat up. If the star is big enough (at least 10 times bigger than our sun) then it will go supernova and make a stellar black hole and slowly develop into a supermassive black hole. If not it will become a normal black hole. Depending on how big the hole is determines its lifespan.
Some stars don't become black holes. If they are made of tougher stuff then they will become a white dwarf or a neutron star
black holes are formed by the gravitational collapse of super or hyper giant star bearing 9-10 solar masses But it is not only the process by which a black hole starts it's life.
according to big bang theory after the few moments to big bang the temperature and pressure were extremely large And under these conditions simple fluctuations in the density of matter may Produce the local region dense enough to form a black hole( primordial black)
A black hole starts with the gravitational collapse of a star. It has to be a massive star. Less massive stars will become white dwarves or neutron stars, when they run out of fuel; while the most massive stars will collapse into black holes.
As stars not much more different than our own sun.
Assuming you mean the event horizon of a black hole (there are other types as well), the diameter of a black hole as measured by its event horizon is directly proportional to its mass. The larger the mass, the larger the diameter. Thus, as a black hole's mass increases, it will get bigger. The only limitation is how much mass a black hole is able to incorporate from its surroundings.
Because of their previous history. The star that converted to a black hole may have had more or less mass for a start. Also, a black hole can increase in mass when matter falls into it, so depending on the amount of matter available for the black hole, the results may vary.However, it is not yet known how the galactic black holes achieved the enormous mass they have.Because of their previous history. The star that converted to a black hole may have had more or less mass for a start. Also, a black hole can increase in mass when matter falls into it, so depending on the amount of matter available for the black hole, the results may vary.However, it is not yet known how the galactic black holes achieved the enormous mass they have.Because of their previous history. The star that converted to a black hole may have had more or less mass for a start. Also, a black hole can increase in mass when matter falls into it, so depending on the amount of matter available for the black hole, the results may vary.However, it is not yet known how the galactic black holes achieved the enormous mass they have.Because of their previous history. The star that converted to a black hole may have had more or less mass for a start. Also, a black hole can increase in mass when matter falls into it, so depending on the amount of matter available for the black hole, the results may vary.However, it is not yet known how the galactic black holes achieved the enormous mass they have.
I don't think you could talk about a "day" on a black hole - for a start, nobody could survive in a black hole, to observe such a day. But if you refer to the rotation, one black hole has been observed that seems to spin over a thousand times per second. This rotation, of course, can be different for other black holes.
The material sucked in to a black hole becomes part of the black hole - that is, a black hole crushes matter to an nearly no size, at all.
No. A black hole will remain a black hole. A neutron star is a remnant of a star not massive enough to become a black hole.
A black hole
By a Star collapsing on its self.
Black holes and the big dipper are in space. They begin with the letter b.
It is not yet known for sure how a supermassive black hole acquires the enormous mass it has. It is possible that it starts as a normal black hole, and then gets more mass. It is also possible that from the start, a much larger amount of mass than in a normal black hole collapses.
Assuming you mean the event horizon of a black hole (there are other types as well), the diameter of a black hole as measured by its event horizon is directly proportional to its mass. The larger the mass, the larger the diameter. Thus, as a black hole's mass increases, it will get bigger. The only limitation is how much mass a black hole is able to incorporate from its surroundings.
Because of their previous history. The star that converted to a black hole may have had more or less mass for a start. Also, a black hole can increase in mass when matter falls into it, so depending on the amount of matter available for the black hole, the results may vary.However, it is not yet known how the galactic black holes achieved the enormous mass they have.Because of their previous history. The star that converted to a black hole may have had more or less mass for a start. Also, a black hole can increase in mass when matter falls into it, so depending on the amount of matter available for the black hole, the results may vary.However, it is not yet known how the galactic black holes achieved the enormous mass they have.Because of their previous history. The star that converted to a black hole may have had more or less mass for a start. Also, a black hole can increase in mass when matter falls into it, so depending on the amount of matter available for the black hole, the results may vary.However, it is not yet known how the galactic black holes achieved the enormous mass they have.Because of their previous history. The star that converted to a black hole may have had more or less mass for a start. Also, a black hole can increase in mass when matter falls into it, so depending on the amount of matter available for the black hole, the results may vary.However, it is not yet known how the galactic black holes achieved the enormous mass they have.
I don't think you could talk about a "day" on a black hole - for a start, nobody could survive in a black hole, to observe such a day. But if you refer to the rotation, one black hole has been observed that seems to spin over a thousand times per second. This rotation, of course, can be different for other black holes.
A dead or dying star will start to create a black hole
The collapses star gets squeezed by collapses gas and turns into a black hole.
A Schwarzschild black hole is a non-rotating black hole. The Kerr black hole is a rotating black hole. Since the latter is more complicated to describe, it was developed much later.A Schwarzschild black hole is a non-rotating black hole. The Kerr black hole is a rotating black hole. Since the latter is more complicated to describe, it was developed much later.A Schwarzschild black hole is a non-rotating black hole. The Kerr black hole is a rotating black hole. Since the latter is more complicated to describe, it was developed much later.A Schwarzschild black hole is a non-rotating black hole. The Kerr black hole is a rotating black hole. Since the latter is more complicated to describe, it was developed much later.
A black hole does not start. To my study of what is and isn't a black hole is actually mass being pulled from the realms of our universe to the ANTI-UNIVERSE. Yes, I'm sorry but in the big picture there is only 2 entire universes containing other universes. This universe I believe is our goal in getting to as it would be our only purpose. With your question it is where does it start, but seeing how a black hole is a concentrated worm hole of mass It can't really be said. If you want a general question for a science project or you are not in high school I would just have to tell you that a black hole starts at the point of impact of the concentration of the mass. In other words... It starts where ever you see it.
A black hole originated as a star, that is, the star converted to a black hole.