we all know nothing can escape it
we get it already but is it possible for something to escape a black hole and
if you fell into one what would really happen the answer is probably going to
surprise you and it's not what you think also new research shows that what we
thought was a black hole in the middle of the milky way galaxy might not even
be a black hole at all so what is it a tesseract full of bookshelves or maybe the home of
cthulhu or perhaps it's something far
more.
Mysterious it's pretty safe to
say that we have no idea what a black hole is what's going on inside or if it's
something else completely it's not like we can directly image one but at least we
can now get images of their huge shadows in space in 2019 astronomers grabbed
the first ever image of a black hole and a new polarized image shows powerful magnetic
fields wrapping around a huge black hole shadow this super massive black hole
is some 55 million light years away from us and is bigger than the entire solar
system we're going to use this massive black hole for a simulation that
involves you and a friend but we'll get to that in a bit you know the whole
thing about nothing being able to escape a black hole well is this really true
when a black hole eats up a star or a bunch of gas they generate a powerful
flow of high energy particles close to the event horizon the ring of fire
called hawking radiation at the edge and if a black hole is really chewing on
something like a massive star powerful x-ray jets shoot out and the black hole becomes
a quasar the brightest objects in the universe who says light can't escape it well
now we have another argument about nothing being able to escape a hungry black
hole this is because astronomers captured a neutron star in an elliptical orbit
around a black hole that survived being swallowed completely however the dead
star didn't get away from the black hole unscathed astronomers captured images
of massive x-ray flares being belched out by the black hole as it was eating
the star's material the star is trapped on a nine-hour elliptical orbit around
the black hole and at its closest orbit the black hole rips off more of the
star's material and becomes bigger it will try hard to get away but there's no
escape as the black hole will eat it more and more until there's nothing left
so now we all understand how powerful a black hole can be even
swallowing each other now you
might be wondering what the closest one to earth is and if we're in any danger
of a black hole eating us sometime soon just recently scientists discovered one
of the smallest black holes ever found and it just so happens it's also the closest
to earth astronomers have named it the unicorn because so far it's the only one
of its kind and it's in the constellation monasteries the unicorn it's about
three times the mass of our sun which is tiny for a black hole and it's about 1500
light years from earth which means you don't need to worry it's not goanna come
and swallow us up anytime soon that's because black holes don't usually move and
sit in one place eating up everything that gets too close to them but that
doesn't mean they can't move and here's a scary thought in 2021 researchers got
a big surprise when they discovered a super massive black hole racing across
the universe at 177 000 kilometres per hour the big mystery is that astronomers
don't know why the black hole which is three million times heavier than our sun
is speeding through the center of the galaxy about 230 million light years away
now that sounds crazy and it sounds fast but in 2017 scientists clocked another
super massive black hole hurtling through space at 7.2 million kilometres per
hour an enormous force would have to be responsible to get these things moving through
space that fast maybe what we are seeing is the result of two black holes
colliding the massive collision sending the other flying wildly through space
so now we've all learned what happens when something gets too close and is
sucked into a black hole so what happens to a person and could you survive the
trip now we've all heard that if you
somehow get sucked into a black hole you would be stretched out or spaghetti
maybe even crushed or well you get the
idea now this might be true if the black hole was small enough but a black hole
let's say 30 to 100 times more massive than the Sun that's where reality
becomes really strange the moment you entered a black hole reality would split
you in two or clone you in one of these realities you would be incinerated and
in the other you would plunge into the black hole and fall through it without
being harmed how is this possible you ask well a black hole is a place where
the laws of physics break down Einstein said that gravity warps space itself causing
it to curve and space-time can become so warped that it twists in on itself yes
we know that's a lot for the mind to wrap around so it's time for thought
experiment in the beginning we said we were going to run a simulation involving
you and a friend let's say that you both signed up to go on an adventure to the
nearest black hole one of you will go in and the other will be an observer you
flipped the coin your friend is going to watch you in horror as you plunge
toward the black hole while they remain floating away at a safe distance now
this is where it gets weird as you accelerate towards the event horizon your
friend sees you stretch and contort as if they were looking at you through a giant
magnifying glass but as you get closer to the horizon you appear to move in
slow motion and as you reach the horizon you remain there motionless stretched
across the surface of the horizon and the heat begins to engulf you your friend
sees you slowly obliterated by the stretching of space and the ring of fire
called hawking radiation before you get a chance to cross over into the
darkness of the black hole
you are reduced to ash game over but don't plan your
funeral just yet we need to view this scene from your point of view because
something even stranger happens nothing that's right from your perspective you would
sail straight into the ominous black hole without so much as a scratch no slow
stretching and no scolding hawking radiation either the reason is that you are
in a free-for-all and therefore you feel no gravity if the black hole was
smaller you'd have a problem because the force of gravity would be stronger at
your feet than your head and stretch you out like spaghetti but something way
more massive than our sun the forces would be small enough you wouldn't notice
them but the sad and lonely part about this adventure is that you would live out the rest of your life
pretty normally until you reached the singularity but what's wrong with your
friend and why are they telling everyone that you've been barbecued to a crisp
by radiation outside of the horizon while you're chilling inside the black hole
actually you really were burned to a crisp at the horizon and you are inside
the black hole at the same time this is because the laws of nature require that
you remain outside the black hole as seen from your friend's perspective
and quantum physics demands that
information can never be lost and all information that accounts for your existence
has to remain on the outside of the horizon however the laws of physics also
require that you sail through the horizon without being fired by hot particles
otherwise you would be in violation of Einstein’s theory of general relativity
now some of you are going to say no way and you have to admit it's a conclusion
that seems nonsensical how can a black hole clone me you're asking physicists
called this mind-bending conundrum that black hole information paradox but in
reality there's no paradox because no one ever sees your clone your friend only
sees one of you and you only see yourself neither one of you can compare notes
and no one really knows what happens and it doesn't matter if we try to send
someone or some spacecraft inside of a black hole to relay back some data once
inside there will be no way for a signal to get out and you'd be lost forever
but what an awesome trip it would be so what about the mystery of the black
hole in the middle of the milky way galaxy for years it was widely accepted
that Sagittarius a is a black hole in the middle of the milky way galaxy
however some astrophysicists from Italy now say the object which is as big as
four million suns might not be a black hole after all the reason is that a huge
gas cloud came close to the black hole the gravitational forces of Sagittarius
a should have eaten the cloud but the cloud of Cass survived with an issue could
it be the home of cthulhu well while we love to joke about this the answer
might just be as mysterious some scientists say that the center could be a big
bundle of that incredibly elusive stuff they call dark matter which is
invisible and thought to account for 80 percent of the total matter in the
universe but cannot be detected because it doesn't interact with light now
scientists have proposed that black holes themselves could be formed out of
dark matter which would explain why they conform so quickly before the galaxies
around them and one day that might be proven to be true we're starting to find
out more every day and tomorrow we might find out everything we thought we knew
is wrong so make sure you stay tuned here so we can discover the universe together
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