How often do black holes happen?

Answer 1

I can't tell you the exact time, but it would probably be somewhat quick.

The sun is made up litterally of flames and gas. All the black hole would have to do is pull the flames and gas into the mouth of the hole and the sun is gone. It seems to me that it would take a few minutes, depending on the size of the hole. If it is a small hole, made by a star about the size of our sun, it would take around three to five minutes. Maybe more.

Answer 2

Black holes are formed when massive stars collapse under their own gravity. This process is relatively rare in the universe, as it requires a star at least 20 times more massive than our sun. As a result, black holes are not common occurrences.

Answer 3

The oldest black hole will be the first black hole ever created. Know one knows when that was but it would have been after the first population III star exploded as a supernova. This would put it around 13 billion years old.

Answer 4

A black hole will continue sucking in any matter that comes close enough, almost indefinitely. In fact, if matter falls into the black hole, that will increase its mass, thus making the black hole more powerful.

Eventually, a black hole should evaporate (Hawking radiation), but at the current condition of the Universe, just by absorbing background radiation, the black hole would increase in mass faster than it can evaporate. It would take a stellar black hole much, much longer than the current age of the Universe to evaporate completely - for a supermassive black hole, even longer.

Even though black holes tend to grow, it is still not completely understood how the supermassive black holes, in the center of most galaxies, managed to get as massive as they are.

A black hole will continue sucking in any matter that comes close enough, almost indefinitely. In fact, if matter falls into the black hole, that will increase its mass, thus making the black hole more powerful.

Eventually, a black hole should evaporate (Hawking radiation), but at the current condition of the Universe, just by absorbing background radiation, the black hole would increase in mass faster than it can evaporate. It would take a stellar black hole much, much longer than the current age of the Universe to evaporate completely - for a supermassive black hole, even longer.

Even though black holes tend to grow, it is still not completely understood how the supermassive black holes, in the center of most galaxies, managed to get as massive as they are.

A black hole will continue sucking in any matter that comes close enough, almost indefinitely. In fact, if matter falls into the black hole, that will increase its mass, thus making the black hole more powerful.

Eventually, a black hole should evaporate (Hawking radiation), but at the current condition of the Universe, just by absorbing background radiation, the black hole would increase in mass faster than it can evaporate. It would take a stellar black hole much, much longer than the current age of the Universe to evaporate completely - for a supermassive black hole, even longer.

Even though black holes tend to grow, it is still not completely understood how the supermassive black holes, in the center of most galaxies, managed to get as massive as they are.

A black hole will continue sucking in any matter that comes close enough, almost indefinitely. In fact, if matter falls into the black hole, that will increase its mass, thus making the black hole more powerful.

Eventually, a black hole should evaporate (Hawking radiation), but at the current condition of the Universe, just by absorbing background radiation, the black hole would increase in mass faster than it can evaporate. It would take a stellar black hole much, much longer than the current age of the Universe to evaporate completely - for a supermassive black hole, even longer.

Even though black holes tend to grow, it is still not completely understood how the supermassive black holes, in the center of most galaxies, managed to get as massive as they are.

Answer 5

It really depends on the mass of the star. it may take up to a trillion years for a large mass star to form into a red giant and a further 50 billion to explode in a supernova. this created extreme mass so that the event horizon forms, and then the black hole comes.

Answer 6

The nearest KNOWN black hole is several thousand light-years away. There are probably black holes nearer-by; it so happens that not all black holes can be easily observed. They can easily be observed if they are part of a close binary system, and mass falls from the companion onto the black hole (thus emitting X-rays).

Answer 7

That depends on the size of the black hole.

All mass is a form of energy (E=mc2), black holes also emit a small amount of hawking radiation so it is inevitable that they evaporate over time.

Microscopic black holes can last for billionths of a second while super massive black holes will last for upwards of googleplex^googleplex years.

Lifetime of a Black hole as it evaporates due to Hawking Radiation:

‾‾‾‾‾‾‾‾‾‾ H・C6

P = L = ---------------------- (1)

_______ 30720π2GM2

Answer 8

Let's see, what did Hawking say most recently? Oh, yes.

We used to think that once a black hole formed, it was forever, or until the end of the universe. Then the British scientist Stephen Hawking figured out that for black holes smaller than a certain size, it might be possible for matter to "escape" from the black hole, and for smaller black holes to evaporate. Once the mass reached a certain minimum, the remnant might explode releasing all of the remaining mass rather abruptly.

In a discussion with other physicists and mathematicians, Hawking was later persuaded that he had been incorrect, but the matter may still be in doubt.

Bear in mind that we've never seen a black hole, that there are no black holes even "sort of close" as interstellar distances go, and that everything we THINK we know about black holes is based on a lot of theory, some VERY complicated math, and some irregular x-rays that we can detect with our instruments. Much of what we think we know is incomplete, and confusing. The universe, said Einstein, is not only a stranger place than we imagine, it is stranger than we CAN imagine.

Answer 9

A black hole will continue sucking in any matter that comes close enough, almost indefinitely. In fact, if matter falls into the black hole, that will increase its mass, thus making the black hole more powerful.

Eventually, a black hole should evaporate (Hawking radiation), but at the current condition of the Universe, just by absorbing background radiation, the black hole would increase in mass faster than it can evaporate. It would take a stellar black hole much, much longer than the current age of the Universe to evaporate completely - for a supermassive black hole, even longer.

Even though black holes tend to grow, it is still not completely understood how the supermassive black holes, in the center of most galaxies, managed to get as massive as they are.

Answer 10

Once a second