BLACK HOLES AND TYPE OF BLACK HOLES AND FACTS
BLACK HOLES AND TYPE OF BLACK HOLES
What is Black Holes?
Black holes are some of the strangest and most fascinating objects in outer space. They're extremely dense, with such strong gravitational attraction that even light cannot escape their grasp if it comes near enough.
Albert Einstein first predicted the existence of black holes in1916 with the help of GENERAL THEORY OF RELATIVITY The term "BLACK HOLES" is coined by American astronomer John Wheeler in 1967. In 1971 the first physical black holes is ever discovered'
So far astronomers found the three types of black holes
1.Stellar black holes
2.Supermassive black holes
3.Intermidiate black holes
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1.Stellar black holes
When a star burns through the last of its fuel, the object may collapse, or fall into itself. For smaller stars (those up to about three times the sun's mass), the new core will become a neutron star or a white dwarf. But when a larger star collapses, it continues to compress and creates a Stellar black holes.
Black holes formed by the collapse of individual stars are relatively small, but incredibly dense. One of these objects packs more than three times the mass of the sun into the diameter of a city. This leads to a crazy amount of gravitational force pulling on objects around the object. Stellar black holes then consume the dust and gas from their surrounding galaxies, which keeps them growing in size.
In our Milky Way galaxy there are few hundred million stellar black holes
2.Supermassive black holes
Supermassive black holes are consider as the birth of Giants. As the name suggest supermassive black holes these are millions or even billions times as massive as the sun, but they are same in the diameter. Such type of black holes are considered to found in the center of every galaxy including our galaxy Milky Way.Scientist are not sure about how such types of black holes are formed. There are various theories described by scientist about how such black holes are formed1.Supermassive black holes may be the result of hundreds or thousands of tiny black holes that merge together2.Large gas clouds could also be responsible, collapsing together and rapidly accreting mass3.The collapse of a stellar cluster, a group of stars all falling together.4.Supermassive black holes could arise from large clusters of dark matter. This is a substance that we can observe through its gravitational effect on other objects; however, we don't know what dark matter is composed of because it does not emit light and cannot be directly observed.Once these giants are formed, they gather mass from dust and gas around them and materials that plentiful the center of galaxy allows them to grow even more enormous size3.Intermidiate black holes
These types of black holes are considered as Stuck in the middle black holes. Scientist earlier thought that there are only small and large size of black holes, but from recent research has reveled the possibility that midsize, or intermediate,
black holes could exist. Such bodies could form when stars in a cluster collide in a chain reaction. Several of these IMBHs forming in the same region could then eventually fall together in the center of a galaxy and create a supermassive black hole.
In 2014, astronomers found what appeared to be an intermediate mass black holes in the arm of a spiral galaxy.HOW DO BLACK HOLES ARE FORMED
It's generally accepted that stars with a mass at least three time greater than that of our Sun's can undergo extreme gravitational collapse once their fuel depletes.
With so much mass in a confined volume, the collective force of gravity overcomes the rule that usually keeps the building blocks of atoms from occupying the same space. All this density creates a black hole.A second type of miniature black hole has been hypothesized, though never observed. They're thought to have formed when the rippling vacuum of the early Universe rapidly expanded in an event known as inflation, causing highly dense regions to collapse.
INTERESTING FACTS ABOUT BLACK HOLES
1.Supermassive black holes can give birth to stars and determines the number of stars in the galaxy
2.Black holes comes in small, medium and large size
3.Black holes can distorts time and space around them
4.Astronomers estimate that the Milky Way has anywhere from 10 million to 1 billion stellar black holes, with masses roughly three times that of the sun
5.If you fell into a black hole, theory has long suggested that gravity would stretch you out like spaghetti
6.Miniature black holes may have formed immediately after the Big Bang.
7. If a star passes too close to a black hole, the star can be torn apart
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