Black Hole Essay

Essay about Black Holes
Black Holes
Within our galaxy alone, there are millions upon millions of stars. Within our universe, there are
millions upon millions of galaxies. Humans have known the existance of stars since they have had
eyes. Although interpretations may have differed on what they were, they were always thought of
as white glowing specks in the sky, but the mystery does not lie within what we can see, but what
we can not see. There are billions of stars lighting the darkness of our universe, but the question lies
in what happens when one of these enormous lamps burns out. Upon many speculations, one of the
most facinating is the black hole theory. Not any star can become a Black Hole. For instance, the
possibility of our sun becoming a black hole...show more content...
Even though a black hole's gravitational pull is enormous, it does have its boundry. This boundry is
called the "event horizon". This event horizon is the point where the black hole's
gravitational pull begins. Once you cross the event horizon, there is no turning back. As stated
before, the escape velocity of a black hole exceeds the speed of light, and since going faster than
the speed of light is impossible, so is escaping a black hole's gravitational pull. This explains why
all the black holes do not swallow everything up in the universe.
Inside the event horizon is where the major speculation begins, just what happens once you cross the
event horizon. Well, once you cross the event horizon, you'll be spinning around the center at the
speed of light. As you get closer to the center, or what scientists call the "singularity", the
theory of the speghetti effect comes into play. That is, the gravitational pull of the center of the
black hole is greater at your feet than your head, thus pulling stronger at your feet, and stretching you
out to a point of infinite thinness. This same force is what causes the tides in our ocean, hence the
name "tidal forces". The time in which it takes you to witness this effect depends on the
size of the black hole. A smaller black hole means that
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Black Holes Essay
Black Holes
The American scientist John Wheeler coined the phrase "black hole" in 1969 to describe a
massively compact star with such a strong gravitational field that light cannot escape. When a star's
central reserve of hydrogen is depleted, the star begins to die. Gravity causes the center to contract to
higher and higher temperatures, while the outer regions swell up, and the star becomes a red giant.
The star then evolves into a white dwarf, where most of its matter is compressed into a sphere
roughly the size of Earth. Some stars continue to evolve, and their centers contract to even higher
densities and temperatures until their nuclear reserves are exhausted and only their gravitational
energy remain. The core then rushes...show more content...
Rays of light leaving a gravitating body are curved, and become more curved as the body shrinks.
When the radius of the body is less than the radius of the photon sphere, a radius 1.5 times the
Schwartzschild radius where the light rays circularly orbit a black hole, the exit cone begins to
close. Rays within the exit cone escape while those outside are trapped and fall back. Since the
photon sphere orbits are unstable, if a circulating rays is disturbed slightly, it either spirals around
and is captured or spirals out and escapes at radius 3^.5=1.732 times that of the photon sphere. Both
redshift and deflection allow no radiation to escape (Harrison 248–250).
At large distances from the black hole, gravity is weak and spacetime is the same as spacetime in
special relativity. Close to the black hole, however, spacetime is deformed, causing differences in
space and time between the stationary and distant observer. The effect of spacetime curvature near
a black hole is such that lightcones are tilted so that the future lightcones tip toward the black
hole. At the surface of the black hole (the event horizon), all rays emitted fall into the black hole.
And no rays from the past are received from the black hole. A particle passing into a black hole
receives no information of what lies ahead, and reaches the singularity in a time t= Rs /c. To a
distant observer, however, it takes an infinite time for the

Black Holes: Forces of Gravity Essay
Science has always been about analyzing the hard facts in front of you, even if they might be
invisible to the naked eye. Sizable leaps in our understanding about the mechanisms of life and our
universe are in the process of being made with scientists believing black holes are the major
precipice to these greater understandings. Black holes push and break many modern understandings
of physics and time with many mysterious qualities. Insuppressible forces of nature, black holes, are
a little understood entity in our universe with a strong influence on modern science.
Despite modern culture and its influences on the unknown, a black hole is not a well understood
concept even by the greatest of minds. Robert Prigo describes a black hole as "......show more
content...
Light is the fastest entity in the known universe, making black holes the strongest known object.
At least knowing how big one is would allow for some creativity, but describing a black hole's size
is yet another issue. When you're trying to ask someone how big something is you're going to be
referring to the space it takes up. In this regard, a black hole can range from being smaller than an
atom, to millions of times larger than our sun, or really any size in principal. "Any amount of
mass at all can [...] be made to form a black hole if you compress it to a high enough density."
(Bunn) Density, the compactness of an object, is a better way of describing a black hole because
the way we think of size has no meaning here. You could also talk about its mass, or the sheer
amount of material inside of it, but that is hard to quantify. For example, a black hole the size of
an atom may contain all of the masses of our greatest mountains, but you can imagine something
like that must be very dense. Either way, there are two common models for what a black hole
could look like. If a black hole is spinning, then it's likely that the material inside of it is being
compressed into a rotating disk of particles. On the other hand, a regular black hole is likely just to
be a perfect sphere. Anything outside of the black hole's insides may also display unique properties,
such as giving off electricity, emitting radiation or streams of light, and debris may orbit the

Informative Essay: What Are Black Holes?
It's a trap. Our universe, even our galaxy, contains many things that we do not fully understand.
Part of this is the massive scale, the huge size that everything is when we compare it to ourselves.
This means that many things are out of our realistic reach at this time. We cannot observe things in
person. Some bodies, we would not be able to see even if we were standing on top of them. One of
these such things are black holes. Physicists theorize that they exist, but they are still hard to
understand. Not much is known about black holes, but being conscious about them could be crucial.
It is hard to describe these elusive entities. Physicists agree on a definition, an incredible amount of
mass in a single space that has such a large gravitational...show more content...
Black holes are formed when massive stars collapse under the weight of their own gravity
(Schoolworkhelper Editorial Team). The nuclear fusion in younger stars creates a constant outward
pressure from the core ("Black Hole Images, Facts and Information"). This balances the pull from
the gasses in orbit around the core, keeping the star stable (Schoolworkhelper Editorial Team).
Once a star's life is nearing the end, and its gasses have almost all been used up in the nuclear
reactions, the star will collapse inward from the gravitational pull without the outward push of the
reactions (Schoolworkhelper Editorial Team). This happens to stars of at least six to eight times the
mass of our sun (Schoolworkhelper Editorial

Black Hole Research Paper
There are two types of black holes that exist in our universe. The first one being the Schwarzschild
black hole which happens to be the simplest one of the two. This black hole is considered the
simplest because its core does not rotate which means the black hole is completely stable at all times
of the day. The nextblack hole is the Kerr black hole, which happens to be the most common in
nature. This black hole in contrast to the Schwarzschild black hole does indeed rotate. When the
rotating star dies out and collapses, the core continues to rotate and therefore, that carries over to the
black hole. Scientists believe that the smallest black holes formed when the actual universe formed
and began. They also have been led to believe that the supermassive black holes that exist in our
universe were made at the same time as the galaxy that they...show more content...
He named it black holes because he continued to hear news of how there were dark regions in the
sky that would suck matter into them so he came up with the term 'Black Hole'. However, no one
knew what exactly a black hole was and what it could do so they began to take hints and make
predictions as to what they could be. Back in 1783, John Michell predicted that there might be an
object massive enough in space that its escape velocity could be greater than the speed of light.
Later in 1796, Simon Pierre LaPlace predicted that black holes actually existed as he stated, "It is
therefore possible that the largest luminous bodies in the universe may, through this cause, be
invisible." He believed a black hole was invisible because since there is no light up in space, he
thought they just blended in to their surroundings. The first black hole that astronomers could
actually examine was found in 1970 and they named it the Cygnus X – 1. The black hole measured
to be smaller than Earth and was detected by the x–rays it gave off on its outside

Black Holes : A Black Hole
Black holes should probably not be called black holes. In fact, black holes are anything but empty
space. Black holes are a great amount of matter packed and squeezed into a very small area. The
result of this amount of matter squeezed into a small area results in a gravitational field so strong
that nothing, not even light, can escape. Scientists do not have the ability to directly observe black
holes with telescopes that detect x–rays, light, or other forms of electromagnetic radiation. However,
Scientists can infer the presence of black holes and study them by detecting their effect on other
matter nearby. If a black holes passes through a cloud of interstellar matter, it will draw that matter
inward in a process known as accretion. A similar process will occur if a black holes passes a normal
star. So, after a black hole is created, it draws in anything in its path adding to the extreme amount
of matter that is packed into that very small area. Common types of black holes are produced by
certain dying stars. A star with a mass greater than 20 times the mass of our sun can produce a
black hole at the end of its life. Black holes are usually only created by the death of a very massive
star. When a very massive star dies, it explodes into a supernova. The outer parts of the star are
launched violently into space while the core completely collapses under its own weight. If the core
remaining after the giant explosion from the supernova is very massive, there

Black Hole Research Papers
Black Holes This paper will introduce you to the incredible topic which is black holes. A black
hole is a region of space time exhibiting such strong gravitational effects that nothing can escape
from inside it. (NASA) No human has ever entered a black hole and there is still a large mystery
about them; we have very little idea of where the matter that enters them goes. Ablack hole cannot be
looked into either, as it sucks all the light into the middle of it. Space programs use special satellites
with certain features that allow them to see these black holes. A black hole can be big or small,
sometimes forming when a star is dying. Some scientists speculate that there can be black holes just
1 centimeter large. There are multiple types of...show more content...
Scary right? Well what about a black hole sucking in the earth, is it possible? Thankfully, black
holes do not go around eating stars, moons, and planets. There is no black hole close enough to the
earth for it to be able to be sucked into. If a black hole the same mass as the sun were to replace the
sun, earth would still not be able to fall into it. The black hole would have the same gravity as the
sun and the planets would orbit it, just as they do the sun. Also, the sun will never turn into a black
hole, as it is not a big enough star to create one.

Black Holes Essay
Black Holes The term black hole was first used in 1969 by the American scientist John Wheeler to
describe an object that had such a huge gravitational pull that not even light could escape it, thereby
rendering it invisible or black. John Michell extended upon this idea in a paper called the
"Philosophical Transactions of the Royal Society of London" in which he pointed out that a star that
was sufficiently massive and compact would have such a strong gravitational pull that not even
...show more content...
If the star is of a small to average size it will shrink down dramatically until it becomes a white dwarf
– when the sun eventually becomes a white dwarf it will be about the size of the earth! A white
dwarf has an extraordinary density – about one teaspoon taken from a white dwarf could weigh as
much as a mountain!
The second possibility occurs if the star is very large. The star will throw out its outer layers in a
terrific explosion, this is called a supernova. The star will then begin to contract under the force of
gravity. But unlike the first possibility, this star will not be able to halt its collapse. The star will
become smaller and smaller until it gets to the point where it has become infinitely dense and
infinitely small – the singularity of a black hole.
A black hole consists of two main parts, a singularity and an event horizon. The event horizon is
like the "skin" of a black hole, once you pass the event horizon there is no escape. The horizon is
often referred to as the clothes of the black hole, as it is a barrier that separates the singularity from
the rest of the universe. The event horizon can be seen by rays of light that are caught in a perpetual
orbit around the black hole – unable to escape yet unable to fall in.
The singularity is what is found at the very center of a black hole; the singularity is a place of
infinite density, infinite

First the mystery of the black holes and how they were created goes way back to when
astronomers first discovered them. The astronaut said "he saw a blob of black matter and black
holes are made when a star burns out or explodes but the astronaut never truly saw the actual thing.
Black holes absorb light particles that are close enough to it so that it can thrive and continue. When a
black hole goes away the light that it absorbed is turned into a new star. When an astronomer found
a black sphere shaped cloud of matter in space he didn't really see it but he saw it pulling in large
amounts of light that have been destroyed from an exploded star. If anything but light matter
happens to get into a black hole it would just go through it rather...show more content...
The scientist said "light matter was being absorbed by the black hole.Next,two different black
holes come in contact then the larger of the two will shoot the other away somewhere else so it
can create a star somewhere else. When a black hole absorbs enough light then it will become a
new star and start the process over again. After that, gravity will drag you toward the singularity at
the speed of light and ultimately spaghettify you. Gravity's strength is determined by the mass of
the object its pulling and then the pulling strength gets greater. This also means that you would be
stretched to fast if you happened to enter a black holes gravitational pull. Closer to the center,
gravity is even stronger. If you were caught by the pull of a black hole, you would be sent into
free fall toward its center. "Next if the Earth was hit by a black hole then it would stop spinning
suddenly, the atmosphere would still be in motion with the Earth's original 1100 mile per hour
rotation speed at the equator"(Black Hole). All of the land masses would be wiped clean of

Black Holes Essay
Black Holes
Every day we look into the night sky, wondering and dreaming what lies beyond our galaxy.
Within our galaxy alone, there are millions upon millions of stars. This may be why it interests us
to learn about all that we cannot see. Humans have known the existence of stars since they have
had eyes, and see them as white glowing specks in the sky. The mystery lies beyond the white
glowing specks we see but, in the things we cannot see in the night sky such as black holes.
Before I begin to speak about black holes, I will have to explain what the white glowing specks in
the sky are. Without a star a black hole could not be formed. In the beginning of a star life a
hydrogen is a major part of its development. Stars...show more content...
If the remnant of this giant exploding star is larger than three solar masses or ten times our sun, it
becomes a black hole. A black hole is one of the last option that a star may take.
In the 18th century scientists started to research the after effects of a large star such as a
supernova exploding. What happens of the gas and dust left behind after such a big star died?
The idea of mass concentration so dense that even light would be trapped goes all the way back
to Laplace in the 18th century. The first scientist to really take an in depth look at black holes and
the collapsing of stars, was a professor, Robert Oppenheimer and his student Hartland Snyder, in
the early nineteen hundreds. They came up with the basics of a black hole from Einstein's theory
of relativity that if the speed of light was the most speed over any massive object, then nothing
could escape a black hole once in its grasp. These researchers showed that when a "sufficiently
massive star" runs out of fuel, it is unable to support itself against its own gravitational pull, and it
should collapse into a black hole. In general theory of relativity, gravity is a manifest of the
curvature of the space–time.
"Einstein general theory of relativity showed that light, though it does not react to gravity in the
same way as ordinary matter, is nevertheless affected by strong gravitational fields. In fact, light
itself cannot escape from inside this

Essay on Black Holes
Black holes are one of the many things in the universe that scientists still have a muddy
understanding about. However, with the incredible advances of technology, we are able to
understand more than what we have in the past. Today, the only way to observe these incredible
objects are by looking for radiation from the gas surrounding it. What are they? Black holes are no
more than a Віdead star.ВІ A star that is considered ВіaliveВІ would be our sun. The sun still
produces energy by converting hydrogen into helium, thus considered to be Віalive.ВІ Once a star
has run out of hydrogen, it begins its dying process. The final stage may result in a black dwarf,
which is a small cool object no longer radiating energy, or if the star harbors enough...show more
content...
The escape velocity would then be 300,000 km/sec, the velocity of light!! This means that if this
was to actually happen to our Earth, that not even light would be able to escape from the
EarthВ№s surface. For stars that harbor such an immense amount of mass, it is possible for the
escape velocity to be greater than that of the speed of light (unlike our sun). The gravity of such a
large star can literally crush it on all sides until it is shrunken to the size of a house, a room, a pea
and so fourth until it is invisible. This is exactly what occurs to a star of such magnitude as it dies
and collapses on itself. Because of the amount of mass within the black holeВ№s small area, the
escape velocity is so great that not even light can escape. As far as it is known there is nothing that
exceeds the speed of light, therefore there is nothing that can escape a black hole. What happens to
everything that enters a black hole? The black hole its self it called the singularity. It is the
contradiction of matter that contains an infinite density and infinite volume. Mass and energy within
this point are concentrated into a infinitesimal point where space vanishes and time comes to an
end. The area directly outside of the singularity is called the event horizon or Schwarzschild radius,
after a German theorist. At this edge, matter that goes in will disappear. the size of the even horizon
equals three km multiplied by the objectВ№s mass. (mass expressed in units of solar masses). Here,

Black Holes
Black holes are objects so dense that not even light can escape their gravity, and since nothing can
travel faster than light, nothing can escape from inside a black hole. Loosely speaking, a black
hole is a region of space that has so much mass concentrated in it that there is no way for a nearby
object to escape its gravitational pull. Since our best theory of gravity at the moment is Einstein's
general theory of relativity, we have to delve into some results of this theory to understand black
holes in detail, by thinking about gravity under fairly simple circumstances.
Suppose that you are standing on the surface of a planet. You throw a rock straight up into the air.
Assuming you don't throw it too hard, it will rise for...show more content...
It is possible there for a star to be swallowed by the black hole.
The pull of gravity on such a star will be so strong as to break it up into its component atoms, and
throw them out at high speed in all directions. Astronomers have found a half–dozen or so binary
star systems (two stars orbiting each other) where one of the stars is invisible, yet must be there
since it pulls with enough gravitational force on the other visible star to make that star orbit around
their common center of gravity and the mass of the invisible star is considerably greater than 3 to 5
solar masses. Therefore these invisible stars are thought to be good candidate black holes. There is
also evidence that super–massive black holes (about 1 billion solar masses) exist at the centers of
many galaxies and quasars. In this latter case other explanations of the output of energy by quasars
are not as good as the explanation using a super–massive black hole. A black hole is formed when a
star of more than 5 solar masses runs out of energy fuel, and the outer layers of gas is thrown out
in a supernova explosion. The core of the star collapses to a super dense neutron star or a Black
Hole where even the atomic nuclei are squeezed together. The energy density goes to infinity. For a
Black Hole, the radius becomes smaller than the Schwarzschild radius, which defines the horizon of
the Black Hole: The death explosion of a massive star, resulting in a sharp increase in brightness
followed by a

Essay about Black Holes
If theories of their existence are true, black holes are the most powerful force in the known
physical universe. Many people are familiar with the term black hole, but few people actually
know anything about them. A black hole forms as a result of a massive star running out of fuel to
burn (Chaisson, 193). Once the star is no longer exerting outward force by burning off gases, it
begins to collapse under it's own intense, inward gravity (Chaisson, 193). It is like slowly letting the
air out of a balloon. Once the star is compacted to a certain size, while it's mass, or weight, remains
the same, it's gravity becomes so powerful that nothing can escape it (Hawking, 87). This critical
size to weight ratio is known as the Schwarzchild
Radius...show more content...
The simple formula for this, in physics, states that a body's escape velocity is equal to the square
root of it's mass, divided by it's radius
(Chaisson, 77). For example, if a body's mass is two–hundred, and it's size is twelve and one half,
the escape velocity would be four. If the size of the same body is reduced to two, while it's mass
remained at two–hundred, the escape velocity increases to ten. Since a black hole's size is always
decreasing and it's weight is always the same, the escape velocity is infinite (Chaisson,
195). This means that nothing can escape a black hole past the event horizon, not even light. Light
is made up of waves and particles. It was discovered, in 1676, by Danish astronomer, Ole
Christenson, that light travels at a very high, but finite speed (Hawking, 18). These properties of
light govern that it must be subject to forces of nature, such as gravity. Light travels at such a
high speed that it is not observably effected by gravity, unless that gravity is very strong. A black
hole's gravity is powerful enough to trap light because it's escape velocity, being infinite, exceeds
the speed of light (Hawking, 82). This is why a black hole is black. Once light crosses the event
horizon it is drawn into the hole in space. Although the light is still hitting objects, it is not able to
bounce off to indicate their existence to an observer,

Black Holes
Black Holes Albert Einstein first predicted black holes in 1916 with his general theory of
relativity. The term "black hole" was coined in 1967 by American astronomer John Wheeler, and
the first one was discovered in 1971. A black hole is a place in space where gravity pulls so much
that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny
space. This can happen when a star is dying. Because no light can get out, people can't see black
holes. They are invisible. Space telescopes with special tools can help find black holes. The special
tools can see how stars that are very close to black holes act differently than other stars. Scientists
think the smallest black holes formed when the universe...show more content...
It's about four million times the mass of the Sun. It's surrounded by a cluster of young stars, some of
which plunge to within a few billion miles of the black hole. And although it's quiet today, a
century ago it gorged on a clump of matter that passed too close, creating a pyrotechnic display that
lit up the Milky Way's heart. Much of that evidence has been amassed by two teams, one led by
Ghez and another by Reinhard Genzel, director of the Max Planck Institute for Extraterrestrial
Physics in Germany. Using giant telescopes in Hawaii and Chile and cutting–edge observational
techniques, they have probed closer to the black hole than ever before. That has allowed them to
plot the orbits of giant stars that pass hair–raisingly close to the black hole, providing the best
measurement of the black hole's mass. And it has revealed that some of the stars around the black
hole are far younger than expected. "There's been a myriad of surprises, which is the fun of doing
research," says Ghez. "You go in expecting to answer one thing and you come out the other end
with more questions than you started with." The central question that Ghez, Genzel, and others
hoped to answer was whether a supermassive black hole inhabits the center of the Milky Way. As
early as 1980, radio observations revealed that gas was swirling around a dark, massive object at the
center of the galaxy. That object, which glowed steadily at radio

Black Hole Of Technology Summary
"The black hole of endless, unimportant streams of technology–enabled information is devouring
everyone living in the 21st century." Words once said by Leena Khan highlighting the downfalls of
technology. Leena Khan in the writing, "Black Hole of Technology" argues much better points than
Stefan Etienne in the writing, "Teens and Technology Share a Future." Consisting of strong points,
having highly effective structure and claims, and it has good structure are all reasons "The Black
Hole of Technology" is superior to "Teens and Technology."
The passage, "Black Hole of Technology" has many points that stand out. The author had
reasonable opinions which were shown from a real experience the author explained. The text has
strong reasons like the fact that technology isolates us from the rest of the world, keeping us
indoors. When Leena's friends were all glued to their phones, she said, "I, on the other hand,
glanced out the window separating us from the beautiful weather outside." This proves that
technology is not always the best form of entertainment. When we are on our device, it is kind of
like we form a barrier to the real world, we get lost in the technology world for a while....show more
content...
It has a clear lack of scientific evidence, but that's no the purpose of this piece. The author intended
to write about how her quality of life is increased without technology, not to list off statistics. Some
people also criticize the piece for having not a wide enough target audience. This can be true for
writings, but in this circumstance, it is not. The author is arguing how teenagers are sucked into the
black hole, and how it affects each other. This whole passage is supposed to be for teenagers.
Therefore, the author does not have to narrow of a target

Black Holes A simple star with low fuel turns into a strong, powerful black hole in space with 4
times more mass than the sun. Discovered in 1916 by Albert Einstein, a black hole is an area of
space–time showing very strong effects, that nothing can escape from the black hole. Space–time is
the belief that there is no time in space, so there is no aging or time whatsoever. There are three
different types of black holes. Stellar–mass, supermassive, and intermediate. All three are very
strong, but the supermassive is currently the strongest reported. Not all black holes are large, but
extremely powerful. The supermassive black holes are the biggest type of black hole and most of the
time are found in the center of massive galaxies. Stellar–mass black holes are formed by a star
collapsing. Intermediate black holes are stronger than stellar–mass black holes, but weaker than
supermassive. Supermassive is the least common black hole there is....show more content...
The star has been losing fuel and is burning out, so the star will begin to collapse. When collapsing
part of the star will shoot into space and scientist believe this is how a supermassive black hole
forms. When the hole is forming, dust and gas is collected from the galaxy surrounding the black
hole. Light cannot be released because matter is squeezed together in a small space. Stellar black
holes are small but dense and can have 20 times more mass than the sun. Mass is the property of a
physical body. When a black hole is forming it is possible for mass to be pulled from stars around
the whole. This will help the hole grow in power and

Black Holes Every day we look out upon the night sky, wondering and dreaming of what lies
beyond our planet. The universe that we live in is so diverse and unique, and it interests us to learn
about all the variance that lies beyond our grasp. Within this marvel of wonders, our universe holds a
mystery that is very difficult to understand because of the complications that arise when trying to
examine and explore the principles of space. That mystery happens to be that of the ever elusive,
black hole.
This essay will hopefully give you the knowledge and understanding of the concepts, properties,
and processes involved with the space phenomenon of the black hole. It will describe how a black
hole is generally formed, how it...show more content...
What this means is that it is impossible to use the laws of physics to predict the structure of the
region after the Cauchy horizon. This breakdown of predictability has led physicists to hypothesize
that a singularity should form at the Cauchy horizon, forcing the evolution of the interior to stop at
the Cauchy horizon, rendering the idea of a region after it meaningless.
Recently this hypothesis was tested in a simple black hole model. A spherically symmetric black
hole with a point electric charge has the same essential features as a rotating black hole. It was
shown in the spherical model that the Cauchy horizon does develop a scalar curvature singularity. It
was also found that the mass of the black hole measured near the Cauchy horizon diverges
exponentially as the Cauchy horizon is approached. This led to this phenomena being dubbed "mass
inflation."
In order to understand what exactly a black hole is, we must first take a look at the basis for the
cause of a black hole. All black holes are formed from the gravitational collapse of a star, usually
having a great, massive, core. A star is created when huge, gigantic, gas clouds bind together due to
attractive forces and form a hot core, combined from all the energy of the two gas clouds. This
energy produced is so great when it first collides, that a nuclear reaction occurs and the gases within
the star start to burn continuously. The hydrogen gas is

The mysteries of black holes are always unknown as to where they're from, who discovered them
and why are they so mysterious. Black holes have been around for centuries. They have been in the
galaxy for over millions of years. Black holes are known as one of the strangest mysteries that's
existed. Ablack hole is a part of space that pulls so much gravity into it that not even light can
escape from it. So where did black holes come to the existence in our lifetime? Mysteries of black
holes always unknown as in where they come from. "Black holes form when the center of a massive
star collapses in on itself." When this occurs, it causes a supernova. A supernova is a star that
increases greatly in brightness because of a catastrophic explosion that ejects most of its mass. The
parts left over from the supernova collapse in onto itself forming a black hole. This well–known
black hole is called a stellar mass black hole. "Scientists believe supermassive black holes have
formed at...show more content...
"Albert Einstein first predicted black holes in 1916 with his general theory of relativity." "The
first to ever name black holes was American astronomer John Wheeler and the first one was
discovered in 1971." John Wheeler was a theoretical physicist. Sadly, he died April 13, 2008. It's
believed to be very hard to see the extraordinary event the only way to see them is by gravity
waves. Firstly, Black holes are made up into three main parts the first part is the Outer Event
Horizon which in this part of the black hole the gravity is not as strong. Secondly, the Inner Event
Horizon in this part of the black hole it is too strong for an object to escape. Thirdly, the
Singularity is the center of the black hole which is a crushed star about the size of an atom, the
smaller the atom gets the stronger the gravitational pull is. This part is the strongest of all three.
Researchers today still study the mystery of black

Understanding Black Holes
Scientific Understanding of Black Holes Black holes are a place in space where the pull of
gravity is so strong that anything including light is able to escape. Researchers say that the
gravity of a black hole is so strong because matter is pressed into a tiny space. Black holes are
sometimes called dying stars or they result in dying stars. There are many different sizes of black
holes, but the three most common are primordial black holes, stellar, and supermassive. This list
goes from smallest to largest.
These size differences makes them so they can form in different ways. Primordial black holes are
said to be formed right after the big bang. Stellar black holes form when a very massive star
collapses on itself. These are also called exploding stars or a supernova. Supermassive black holes
are formed at the same time in the same galaxy . With all these facts about black holes I can
determine the difference between what NASA thinks they are and what the movie thinks they are.
How the Video Accurately Showed Black Holes In the movie Interstellar there's a movie scene
where the main character Cooper is trapped in a black hole. He escapes and is turned back into the
"real" world. All along scientists have been saying that whatever goes into a black hole can never
come out....show more content...
The main difference is what it looks like. Scientists say the way the movie describes a black hole
and the events that happen with it, should look more complicated than it actually is. "It would
have looked a lot more puzzling" (Knapton, 2015). Caltech physicist Kip Thorne told a magazine.
In the movie to really explain the look of a black hole it would have gas wrapped up and around
the top and the bottom of the black hole. The movie was said to enhance the light of the black hole
and yet they really are not that bright. Other than these descriptions, other differences are not very

Essay on The Existence of Black Holes
The Existence of Black Holes
I have always had an interest in science, especially in the sciences regarding outer space. When I
was younger I was always fascinated with rockets, and especially in stars. I have often regretted not
pursuing this interest at its infancy. I do remember going to the Planetarium, and studying about a
topic that I had seen talked about on television. The topic was black holes, and back then all that they
knew was that they were black. The idea of a space in the universe that is completely void of light
was difficult to imagine. Recently, I have learned more about this topic and a science call
cosmology. I had never even heard of this field of science before I was introduced to a scientist by
the name of...show more content...
He sees the black holes as miniature models of a full scale universe. His idea that the implosion of
the star could be related to the implosion of the universe. He wonders if the expansion of the black
holes until their disappearance is relative to the expansion of the universe. This area seems to be a
focused area of Stephen's work.
The prediction of radiation from black holes was the first nontrivial result of combining Einstein's
general relativity with the quantum principle (Thorne, 15). It showed that gravitational collapse
was not as much of a dead end as it had appeared to be. The particles in the black hole need not
have an end of their histories at a singularity. Instead, they could escape from the black hole and
continue their histories outside. Maybe the quantum principle would mean that one could also avoid
the histories having a beginning in time, a point of creation, at the big bang. (Black Holes and Baby
Universes, 83)
This question seems to pose the most complicated answer that Hawking gives to the science
community. The world needed a way of doing the sum over histories not just for particles but for
the whole fabric of space and time as well. Although Stephen does not yet know how to do this
summation correctly, he does know certain features that it should have. In order for these features to
become possible we have to learn to understand a concept called imaginary time.

Black Hole Essay

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