That is a complicated matter.
Black holes are usually the result of matter being concentrated to such a degree that it collapses gravitationally, and produces an event horizon, a sphere of influence in which the escape velocity exceeds the speed of light.
But it is possible that black holes were produced during the Big Bang not as a results of concentrations of matter, but as flaws in the development of space/time itself. Some such flaws may be one-dimensional: cosmic string. Others may be zero-dimensional: they would be tiny singularities. Most such black holes will, according to current theory, have evaporated by now.
The density of matter just after the big bang is calculated to be sufficient to have spontaneously created black holes; such are called primordial black holes, and searches for their existence are ongoing.
The amount of black holes are increasing because the fact that stars are dying and being reborn each second.
he helped develop the big bang theory and also theories about black holes with their temperature and radiation!
The writer may be referring to the theory that black holes could spawn new universes (Smolin's Fecund universe). This is highly theoretical is a along way from being proven.
He didn't. Although Hawking has done an immense amount of theoretical work on black holes, as well as the topology of our Universe, he has always taken Big Bang Cosmology as his starting point. That's because, by the time he got his PhD in 1966, observational evidence had pretty much ruled out any cosmology but Big Bang. Hawking has simply improved our mathematical understanding of BBC.
no black holes are stars
stellar black holes were stars (these are large)primordial black holes were pieces of the big bang (these are microscopic)
The density of matter just after the big bang is calculated to be sufficient to have spontaneously created black holes; such are called primordial black holes, and searches for their existence are ongoing.
One of the considerations for the eventual termination of the universe is that all matter will be pulled into black holes, and then these black holes would eventually evaporate.
The amount of black holes are increasing because the fact that stars are dying and being reborn each second.
The first population III stars formed about 400 million years after the big bang. The first black holes would have formed when these stars exploded, about a few millions years later.See related link for a timeline of the big bang.
It's possible that some "primordial" black holes were created from local density fluctuations immediately after the big bang, though we don't know of any that are so small that they could only have been formed in this way.
stellar black holes, no none at allhawking black holes, no none at allsuper massive black holes at galactic centers, no none at alluniversal black holes, yes we are an example, if the entire universe is indeed inside an ultra massive black hole as would be suggested by the combination of big bang theory and black hole theory
he helped develop the big bang theory and also theories about black holes with their temperature and radiation!
The existence of miniature black holes have not been confirmed yet. It has been hypothesized that there may be some, that formed during the Big Bang. If they did form, we might see flashes from the disintegration of those black holes, now and then. (A miniature black hole takes much less time to disintegrate than a bigger one.)The existence of miniature black holes have not been confirmed yet. It has been hypothesized that there may be some, that formed during the Big Bang. If they did form, we might see flashes from the disintegration of those black holes, now and then. (A miniature black hole takes much less time to disintegrate than a bigger one.)The existence of miniature black holes have not been confirmed yet. It has been hypothesized that there may be some, that formed during the Big Bang. If they did form, we might see flashes from the disintegration of those black holes, now and then. (A miniature black hole takes much less time to disintegrate than a bigger one.)The existence of miniature black holes have not been confirmed yet. It has been hypothesized that there may be some, that formed during the Big Bang. If they did form, we might see flashes from the disintegration of those black holes, now and then. (A miniature black hole takes much less time to disintegrate than a bigger one.)
The big bang theory is the explosion that started the universe. Where as the big crunch is the theory where the universe will eventually contract and become increasingly clumped and eventaully all mater would collapse into black holes which would then coalesce producing a unified black hole or Big Crunch singularity.
The writer may be referring to the theory that black holes could spawn new universes (Smolin's Fecund universe). This is highly theoretical is a along way from being proven.