In our Universe, there are objects which are beyond our understanding. some are even beyond our imagination. Millions of event occurs daily which shapes the Universe and ultimately the way we are.. One such event is the death of a star which leads to the formation of either a dwarf or the mightiest strongest scariest thing of the universe... THE BLACK HOLE.
Black hole is the most sane-defying object of the universe. Their gravity is absolute.. It can consume a whole galaxy. It's the only place where the normal laws of physics breaks down or maybe they have their own laws which we don't know.. Now you can imagine how much heavy a black hole can be. To get a better idea, imagine our planet Earth, now crush it till it gets to the size of a golf ball i.e like two inch diameter.. That's the density of a black hole.
Now the question is how something that powerful, that much denser can be formed without any external force..?? I mean there is nothing like piston or something crushing down something to make it that much denser. So how it gets so denser..?? The answer is GRAVITY... And the only thing that can produce that much of gravity is the large stars ( Around 10 times larger and heavier than our Sun). When one of these stars dies, gravity crushes them until it collapse and creates a Supernova Explosion. But when Stars with 100 times more massive than our Sun, dies it creates one of the biggest explosion in the universe, a HYPERNOVA. This results the birth of a Black hole.
When a Star dies, the core runs out of fuel and there left nothing to hold it up together and when that happens the core collapses and leads the Gravity to go wild. To understand it better, lets take a example of a dying Star,
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Black hole is the most sane-defying object of the universe. Their gravity is absolute.. It can consume a whole galaxy. It's the only place where the normal laws of physics breaks down or maybe they have their own laws which we don't know.. Now you can imagine how much heavy a black hole can be. To get a better idea, imagine our planet Earth, now crush it till it gets to the size of a golf ball i.e like two inch diameter.. That's the density of a black hole.
Now the question is how something that powerful, that much denser can be formed without any external force..?? I mean there is nothing like piston or something crushing down something to make it that much denser. So how it gets so denser..?? The answer is GRAVITY... And the only thing that can produce that much of gravity is the large stars ( Around 10 times larger and heavier than our Sun). When one of these stars dies, gravity crushes them until it collapse and creates a Supernova Explosion. But when Stars with 100 times more massive than our Sun, dies it creates one of the biggest explosion in the universe, a HYPERNOVA. This results the birth of a Black hole.
When a Star dies, the core runs out of fuel and there left nothing to hold it up together and when that happens the core collapses and leads the Gravity to go wild. To understand it better, lets take a example of a dying Star,
for millions of years the core pumps the gas outward and gravity pulls it inward and that way they are in standoff. But when the core runs out of fuel, fusion stops and gravity wins the ultimate battle. In a fraction of second the core shrinks to a fraction of its original size and a baby black hole forms.
Black hole than immediately starts to eat its way out from the star and in the process emits the energy wave. The star finally explodes which produces approx 100 times more energy than our Sun could produce in its lifetime.. The explosion lefts behind the black hole and two jets of gamma-rays which penetrates through he Universe at the speed of light. The Scientist believes that its the most energetic beam of ray after the big bang which fries almost anything which comes in its way.
Gamma rays burst gives scientist to predict the location of a black hole in the universe. In 2001, NASA sends a SWIFT probe to scan the universe for the gamma rays burst and they found something which rocks the astronomy to its foundation. the SWIFT probe detects at least one gamma ray burst everyday which coerce us to believe that there may be billions of black holes consuming everything that comes in its way.
The edge of the black hole, from where nothing comes out is called EVENT HORIZON. One Scientist quotes, "Event horizon is known as event horizon because it separates the two spaces and once you fall over that edge you can never come back.. everything that goes beyond it, is doomed". Suppose you are going towards a black hole. As you gets closer to it with your feet first than you get stretched out as your feet feels more gravity than your head. This process is termed as Spaghettification.. Lets assume you are strong enough to survive and you gets into the black hole and one of your friend watching you from a distance as you go in.. that is where something unbelievable happens. you appear to be stop, that is because time stops in black hole.. Time in black hole is infinitely slow than ours.. But in reality you are being sucked into the black hole until you reached the center point, the point where every laws of physics breaks.. the point where gravity becomes infinite.. Scientist calls it THE SINGULARITY. Even Scientist don't know what happens at the singularity. Space and time becomes meaningless here.
In early universe the clouds of gas merged together to produce stars and when those stars die some becomes black hole.. Black hole starts to merge together to become a Supermassive black hole.. Super massive black hole can be billion times massive than our Sun. It feeds on all the gases within its range. When there no room left for more gases and black hole kept sucking, the only way left now is.. out.!!. It blasted and shoots the most brightest beam of ray through the universe called Quasar. Quasar stands for quasi-stellar radio sources.. The width of the quasar is approximately 20 times our solar system. When all the nearby gases sucked in by black hole and sucked out by quasar there left no more gases to feed on than the young galaxy starts to take its shape. Scientist believes black hole and Quasar determines the shape size and almost everything of a young galaxy..
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| This is a real pic of a quasar in the galaxy M87 which is 50 million light years away |
There is a supermassive black hole at the center of our own milky way galaxy. Its amazed to know that the whole galaxy is revolving around that supermassive black hole. Scientist are trying to find out more about the black hole but its impossible to go there so a virtual telescope of
the size of planet Earth is under development. Actually, many telescope across the world synced together to make a virtual telescope which is 500 times more powerful than a single telescope and in coming years many more telescope will come online. Scientist believes with such a huge telescope, one can actually took a image of the dark heart, the supermassive black hole of our galaxy..
There is another very interesting theory about a black hole which only some scientist believes. If somehow you survive the gravity of event horizon and pass through the layers to the center that is at the core than you don't actually die or crushed instead you will fall through it, fall into a whole new location in the universe or maybe on a different universe, Parallel universe.. Scientist believes the heart of the black hole acts as a portal, a wormhole, a gateway through space.. Through time.. through the universe.. There is a possibility of time travelling but for this the wormhole has to be open for a little longer time and for that a lot of exotic energy required which is possible in a black hole.. Some scientist claims the matter falls into the core and comes out on the other side called white hole just like a big bang. if the scientists are true than we know the evolution of our own universe and maybe we are still in a black hole.
Believe me guys black hole is one of the most mysterious object of our universe about which we dont know anything apart from the fact that it exists..
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