Black
holes are the strangest thing in the universe,
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The parts of black hole ESO, ESA/Hubble, M. Kornmesser/N. Bartmann
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Where do black holes come from?
What if you fall into black hole?
Stars are incredibly massive collections of mostly hydrogen
atoms that collapsed from enormous gas cloud under their own gravity, in their
core nuclear fusion crashes hydrogen atoms into helium releasing a tremendous
amount of energy, this energy in the form of radiation , pushes against gravity
maintaining a balance between the two forces , as long as there is fusion in
the core a star remains stable enough, but for stars with way more mass then
our sun the heat and pressure at the core allow them to fuse heavier elements ,
until they reach iron , unlike all the element that went before the fusion
process that creates iron doesn’t generate any energy iron builds up at the center
of the star until it reaches a critical limit and the balance between radiation
and gravity is suddenly broken , the core collapses , within a fraction of a
second the star implodes moving at about the quarter of the speed of light
feeding even more mass into the core it’s at this very movement that all the
heavier elements in the universe are created as the star dies , in a super nova
explosion , this produces either a neutron star or if the star is massive
enough, the entire mass of the core collapses into a black hole
If you looked at a black hole what you really be seeing is
the event horizon anything that crosses the event horizon needs to be
travelling faster than the speed of light to escape , in other words it is
currently impossible , so we just see a black sphere reflecting nothing but if
the event horizon is the black part, what is the hole part of the black hole the singularity a singularity may be indefinitely
dense meaning all its mass is concentrated into a single point in space with no
surface or volume, is just like dividing by zero.
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| these are the first images of black holes by humanity |
By the way black holes do not suck things up like a vacuum cleaner
if we were to swap the sun for an equally massive black hole nothing much would
change the earth, except that we would freeze to death .
What will happen to you if you fell into black hole?
The experience of time is different around black holes from
the outside you seem to slow down as you approach the event horizon so time
passes slower for you at some point you would appear to freeze in time slowly
turn red and disappear, while from your perspective you watch the rest of the
universe in fast forward kind of like seeing into the future next there are two
ways of you to die in it
- You die a quick death , a black hole curves space so much that once you crossed the event horizon there is only one possible direction , the massive black hole is so concentrated that at some point even tiny distances of a few centimeters would means that gravity acts with millions of times more force on different parts of our body , your cells get torn apart , as your body stretches more and more until you are a hot stream of plasma one atom wide.
- You die a very quick death , very soon after you cross the event horizon , you would hit a fire ball and be terminated at an instant .
Crossing the event horizon is just the beginning of the
challenge there’s a gravitational
singularity at the center of the black hole where density becomes infinity you
would be squashed into that center and become one with the black hole you would
not be able to tell anyone about your experience however a person observing you
from outside the event horizon would die a very different picture as you are
falling into a black hole they would see you slowing down getting dimmer and
redder in the end you just freeze never
crossing the event horizon this is because space and time in a black hole
swapped the roles at the event horizon
time comes to stand still while space on the other hand move forward you wouldn’t be able to turn around and escape
the black hole any more than you could travel back in time even when the black
hole eventually dies emitting all the particles it had absorbed including your
body it would be impossible to tell whether those particles were you Stephen hawking
however found a way in which the information about your body wouldn’t be lost
he theorized that there are alternative
universe with different histories this in one reality you fell into a black
hole in the second one there was no black hole
It’s possible to be certain from outside of the event
horizon whether there’s a black hole or not until you fall in there if you
crossed the event horizon and there was a black hole sayonara, but if you
happen to be in a reality where the black hole did not exist you would still be
alive just in a different universe, there would be no way for you to get back
to ours.
Rule of thumb
The further away from the singularity you are the longer you
live.
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The super massive black hole Gargantua plays a major role in the 2014 sci-fi blockbuster "Interstellar." Paramount
(Image: © Paramount Pictures)
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To understand how this work we have to look at the empty
space ( empty space is not really empty but filled with virtual particles popping into existence
and annihilating each other again )when this happens right on the edge of the
black hole One of the virtual particles will be drawn into the black
hole and the other will escape and become a real particle, so the black hole is
losing energy this happens slowly at first and gets faster as the black hole
becomes smaller this process is so long that when the last black hole radiate
away there would be nobody to witness it.
so this is the end of our black hole , to know about white holes just click on the below given link
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