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Black Holes

Parent Category: Stellar Evolution
Black holes are regions in space created by the death of stars. Their gravitational field is so strong that even light cannot escape from it.
The black hole represents a crust in the space which swallows anything that passes through it. Even light cannot escape from a black hole! There is a particular radius for a mass to become a black hole when it is squashed. This is known as the Schwarzschild radius and for the body to become a...
First of all, there's two theories of relativity. The one on normalrelativity which indicates that an object that is moving very fastwill experience less time than one that is stable. The one onspecial relativity indicates that the more gravity an object isputted into, the less time it will suffer...
Because it does not have enough mass to crush itself with it's gravity.
Neither, dark matter is an undetectable yet massive existence within our universe. It is spread out relatively smoothly, not bunching up in particular locations. For more information, search dark matter images (computer simulated), they help the visualization of it.
Black holes havent quite been explained yet. Some scientists still havent found out why black holes are created, and what creates them. But people have suggested that black holes are usually made o rubbish. (Im talking about junk that is left in space such as crashed space ships, or either broken...
The mass of the progenitor star has to be massive to form a black hole and thus it will have a shorter time on the main sequence compared to a medium sized star.
There really is no answer. A black dwarf is simply a white dwarf that has gone out, after it has radiated all its heat. This process, however, takes an enormous amount of time and our universe is not old enough to acommodate it. Consequently, there is no such thing as a black dwarf anywhere in the...
Nothing. The distortion of space and time within a black hole'sevent horizon is so extreme that the only possible direction ofmovement is further inward.
The ancient Greeks and Celts had mermaid myths.
What you are seeing is an absence of light. You distinguish a black objects presence by its lack relative to other things.
A black table is black because all of the colours are absorbed , and none are reflected. It is the same for any other black item too, for example: A chair. Now, if a chair is red, that is because blue and green (the 2 other primary colours in light) are absorbed and red is reflected. It is the same...
not every star can turn into a black hole, because it has to meet a certain size to do so. our sun will not turn into a black hole, how ever, it will destroy our planets. many stars can turn into black holes, but only when it meets the end of its life which is when it stops burning gas. stars have...
A black hole traps light. It's gravity is so great thatlight cannot escape the gravity well.
No. The nearest black hole is about 1,600 light years away.
Yes, probably many of them. We believe that there is a supermassive black hole at the center of the Milky Way galaxy; that there are probably similar suoermassive black holes at the centers of many large galaxies.
It a Standart for holes Ex. DS 807 (Dansk Standart) v.3 Sep. 1992 Hole in mm and tolranc in µm ( mikrometer) 0-3 mm = +10 to 0 µm = 3,000 to 3,010 = 3 H7 3-6 mm = +12 to 0 µm = 6,000 to 6,012 = 6 H7 6-10 mm = +15 to 0 µm = 10,000 to 10,015 10-18 mm = +18 to 0 µm = 18,000 to 18...
No. White dwarfs, neutron stars, and black holes are threedifferent things. With the exception of some black holes, all areremnants of the cores of dead stars at various degrees of collapse. A white dwarf is the remains of a low to medium mass starconsisting of atomic nuclei surrounded by electrons...
A black hole is a region of space from which nothing, including light, can escape. It is the result of the deformation of spacetime caused by a very compact mass, thus the 'end' of a black hole is the very massive object.
Any mass will warp space and time, according to the General Theory of Relativity. In a black hole the mass is simply more concentrated. Any mass will warp space and time, according to the General Theory of Relativity. In a black hole the mass is simply more concentrated. Any mass will warp space...
\nFor a thermal radiation source, the peak of the blackbody radiation curve is at a photon energy 2.8 times the temperature in electron-volts. \n. \nThe temperature in electron-volts is 1/11,600 times the temperature in Kelvin.\n. \nUse E = hv to convert from the photon energy (E) to photon...
black holes swallow all energy and matter around them, includingelectricity
No they do not. All matter in a black hole is crushed into a single point called a singularity. A point does not have any dimensions so there is no bottom. Or even a top for that matter.
They've observed the black cloud around which no light escapes that surrounds a black hole. They've observed the bending of light around the black hole, which caused two identical looking universes side by side. They've observed the galaxies rotating around them.
The nearest known black hole is at a distance of several thousand light-years. Since Saturn is very near to us by comparison, it doesn't make any difference if you ask about the distance from the Solar System, from the Sun, from Earth, or from Saturn.\n The nearest known black hole is at a...
No. You will not be swallowed by the black hole but you still wouldnot survive for very long. If the sun become a black hole it wouldretain the same mass, so the orbits of the planets would remain thesame. It is only within the former radius of the sun that gravitywould be unusually strong. The...
There is no formula. Light year is the distance as in how many years it takes a star's light to reach its message toward Earth.
The "boundary" you're probably thinking of is called the eventhorizon. Past this point, the escape velocity of the black holeexceeds the speed of light, meaning nothing, including light, canescape it.
A black hole consists of three main parts : The Accretion disk , (outer edge made up of hot gasses/rock etc). The event horizon (the part that looks as though it it a huge black hole, this is because the parts moving into it are moving faster than the speed of light so you cannot see the past...
after a neutron star collapses on itself
In the center of every galaxy there is a giant black hole.
There is no way to escape from a black hole because it's gravity is infinite.
The radiation emitted from a black hole is known as hawking radiation after it's discoverer Stephen Hawking.
A black hole can have an electric charge if it swallows electrically charged objects, but no objects that we know of have magnetic charge. Magnets always have both a north pole and a south pole; there is no evidence that one can exist alone. A lone north or south pole would be called a magnetic...
no because it would destroy the space if it went in to a black hole
Albert Einstein predicted their existence using some prettycomplicated math. It was not until some years after his death thatwe actually detected one (Cygnus X-1).
First of all, there cannot be a black hole on the sun because it'sto small, but technically speaking a star which is massive enoughfor it's core to collapse and form a black hole will be a star thatis not alive any more but will still seem like a normal star foraround three hours, and the only way...
Entropy is the universe's desire to return to disorder, and is an illusion caused by our perception of time. To picture what's going on in entropy, let's imagine a bunch of gas molecules in a jar. To make things easy, let's picture them as billiard balls. The billiard balls will have a bit of energy...
Depends how close the neutrino is to the black hole.
Just an another random volunteer I guess.
The mass of a black hole is contained in a singularity, which is asingle infinitely dense point.
Firstly you get streched then you rip into two then 4 then 10 and you keep doing that until you are a stream of atoms then you get squished and then get burnt up. CAUSE OF THE FREAKIN FCC! Oh yeah that will feel good if you get sucked into a blackhole.
Gravity. When a star of 3+ solar masses collapses in on itself, gravity continues to make its matter denser and denser.
Answer #2: It is not completely known how supermassive black holes form but it is thought that they may have formed from originally stellar-mass black holes from massive stars and/or collapsed gas clouds that were able to accrete enough matter and merge with other singularities to form a massive...
No. Neptune is a planet, so if it had a black hole on or around it, it would be pulled in.
It could be noted that the tidal force near most black holes wouldstretch you to death ("spaghettify") ... but that the larger andmore massive the black hole, the less you'd feel this tidal force.In the unlikely event you could get to a large enough black hole,could survive the intense radiation...
Aside from space, the structure surounding a black hole is anevent horizon (Or apparent horizon depending on if you go byHawking's new theories or not). The "black hole" is actually theevent horizon while the object of the hole itself is thegravitational singularity at the center. . The event...
To be quite plain, no mater cannot escape a black hole. Not even light its self can escape the gravitational pull of a black hole. *more info* Black holes are created when a massive star (about 3-4 times the size of our sun) explode and create a supernovae. The stare will then implode on its self...
Scientists "see" things through specialized equipment that identify waves that are invisible to a human eye i.e. microwaves, gamma waves, etc. Also because we are in the Milky Way, right? SO There are many stars in our galaxy. So, they can see it because it was a big black gap right in our...
no the galaxy is way to big for a black hole to do much in fact wenow know that there is a supermassive black hole in the center ofour galaxy right now.
It sucks it in and packs it into a great big ball of extremely dense matter which is why everything is pulled into it in the first place.
"explode as supernovae". These are called Type II supernovae and sometimes a neutron star is formed, not a black hole.
The very outside part of a black hole when "feeding" is called the Accretion Disc . when a black hole is not devouring a star the outside part becomes the Event Horizon.
because we cant see through the dust and particle filled areas that make up a major portion of the galaxies other wise we could
In fact, black holes cannot be directly viewed. They can only belocated by seeing how much radiation is coming from a certain pointin space. The black holes cannot be viewed directly because theyabsorb the electromagnetic radiation that goes near them.
Matter cannot be created or destroyed, if matter is pulled into a black hole it grows rather than expands, expansion is usually the term for when atoms are pulled apart from each other. Gravity is the warping of the fabric of space and time (Einsteins theory of relativity), all matter is affected...
Black holes,were theorized since the 1800's,it was predicted byEinstein's theory that they were really real.Since then this forcedastronomers to think such a thing is real,and yet they are,butthere very rare to find,so we don't really know what telescopediscovered a black hole.So we thing the Hubble...
well... this is very dangerous and can get infected, see a doctor immediately, because this may well be fatal, depending on the size of the hole.
Light is not only attracted to a black hole, in fact, its attractedto you, to me and to everything made of matter in the universe. Theproblem is that light is affected by gravity, and the black holeshave so much that light significantly change trajectory or theblack holes absorb the photons
No,they are invisible. They are usually detected by how they influence other objects like stars around them.
The "no-hair" theorem states that black holes have only threeproperties for an outside observer: charge, mass, and spin. Inother words, given two black holes with these three propertiesbeing identical, no other information could be obtained to tellthem apart - for example, whether one had been made...
No. Theoretically, black holes lead to wormholes lead to white holes, but that's only one. Wormholes are also associated with teleportation in general. Wormholes are probably the least considered concept in theoretical physics.
that dosent even exist but if they did ppl would go nowhere
That is difficult to quantify as the singularity of a black hole isinfinitely small. A black hole does have angular momentum, but theamount varies depending on the angular momentum of what has goneinto it.
We have never actually been able to stick a thermometer in one so this questing is a Little hard to answer with a any reliable reply.
A Quasar, solar flares, or galaxies exploding
yes, there is actually a giant black hole in the center of our galaxy, but don't worry because we are safely orbiting around it. A black hole is basically really really really dense material, which forms a blob where the gravitational pull is so stong nothing can escape it, not even light. It can...
The sun does not have enough mass to form a black hole. Only stars25 times the mass of the sun or more can form black holes.
A neutron star is the collapsed core of a star in which atoms havebeen crushed, and electrons have fused with protons to formneutrons. The collapse stops at this point. A neutron star isextremely dense but has a finite density and emits radiation. A black hole is an object that has collapsed...
No, black holes absorb all light, so they are virtually invisible. The only way they can be "seen" is by measuring the gravity around it.
Well to be honest, its not really possible to survive living in one. Here are the reasons: 1.The reason why a black hole is black is because light can't escape so if we were in one there would be no light. Like in a whirlpool under a certain speed if you fall in you can't get out. But until...
Gravity takes the form of a field around an object with mass. The mass 'curves' space time around it, causing nearby objects to be attracted towards it. Therefore gravity does not need to 'escape' from a black hole, the strong gravitational field around it is the reason other things cannot escape...
They do the opposite, they stretch you.
Vega has been in the night sky long before humans roamed the Earth - so no one discovered it.
It adds to the mystery and fun for a guy. First seeing it catchesthe eye then it is a must to play with it. It is the foreplay hole.
That's easy! We don't. So far, no sign of the proposed "dark matter" has been discovered, nor have the properties of "dark matter" been firmly defined. The concept is still evolving, and will do doubt be extensively modified in the coming years.
Most Black Holes are created when a star that has 20 times the mass of our sun dies. In a stars life there is a constant war between pressure pushing out and gravity pulling in and when it dies it the outer part is thrown into space and the inner core collapses into itself, creating a black hole.
there really is no way of knowing for sure at least not with thetechnology we have now but there are a lot of theories ranging frommassive seismic events like earthquakes and volcanic eruptions allthe way to releasing demons from hell.
about Black Holes Likely their will be fewer and fewer although Larger as time passes. In the current regime of the Unverse, as galaxies merge and collide, Many Black Holes will be attracted to each other and eventually merge together into larger ones. Their will also continue to be newly...
well black holes are some of the weirdest things in the universeeven Albert Einstein said that they are so weird the natureshouldn't even allow them to happen
Your nose is a tiny bit bigger than your eye.
it is a theory that the world will end on 2012 i dont belive it but the end of the world would probaly be from a metor or a massive volcano euruption
It depends on what you're studying besides black holes. If you're studying planets along with black holes, you could be an astrophysicist. Or, if you're studying atoms along with black holes, you could be a theoretical physicist. Just a few examples.
no, they are not gateways
Answer . Could be a vacuum leak - perhaps bad brake booster. Could be worn brake linings metal to metal
They got the name Black Holes because they suck in light. That's why they are called Black Holes.
Geologist and philosopher John Michell proposed their existence ina paper written in 1783. He realized a star might be so massivethat light would not escape, and called them "dark stars." It waslater in early 20th century when they received more interest as aconsequence of Einstein's general...
Weight is defined by gravity. So in space, you weigh nothing. The more gravity, the more you weigh. Mass, however, does not change with gravity, and is also another factor is weight.
They don't "lead" anywhere. Any mass that falls into the black hole stays in the black hole. There is a theory that, in the case of rotating black holes, matter may emerge elsewhere from a "white hole". It's an idea that remains controversial and highly speculative.
At the event horizon, theory holds that escape velocity is equal tothe speed of light. Outside the event horizon it would decreasewith increasing distance away from the black hole per the inversesquare rule; inside the event horizon it is thought to exceed thespeed of light; thus nothing can escape.
In point of fact, the actual volume and density of a black hole must be determined indirectly, working back from the Schwarzschild radius for the estimated diameter of the black hole's event horizon. There is also the consideration that the center of a black hole can be thought of as near infinite...
Singularity, where all matter is crushed to a point of the same density but zero volume and takes up zero space.