How does a black hole start?

Answer 1

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

Answer 2

There are several ways that a black hole can be born.

1. A star could explode or collapse in on itself creating a black hole.
2. It is thought that many black holes were created during the big bang.
3. Molecular gas clouds and space dust can form together making an object with a gravitational pull powerful enough to make a black hole.
4. Another theory is that two or more neutron stars could collide creating a black hole.

Answer 3

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.

Answer 4

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.

Answer 5

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

Answer 6

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)

Answer 7

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.

Answer 8

A black hole forms when a massive star runs out of nuclear fuel and collapses under its own gravity. The core of the star then implodes, leading to a singularity, around which the event horizon forms. This boundary marks the point of no return, beyond which even light cannot escape.

Answer 9

As stars not much more different than our own sun.