Does wormholes(black hole and white hole)really exists?
599123
yes it do.\n\nIn physics, a wormhole (also known as Abbreviated Space) is a hypothetical topological feature of spacetime that is essentially a "shortcut" or "abbreviation" through space and time. A wormhole has at least two mouths which are connected to a single throat. If the wormhole is traversable, matter can 'travel' from one mouth to the other by passing through the throat.\n\nThe name "wormhole" comes from an analogy used to explain the phenomenon. If a worm is travelling over the skin of an apple, then the worm could take a shortcut to the opposite side of the apple's skin by burrowing through its center, rather than travelling the entire distance around, just as a wormhole traveller could take a shortcut to the opposite side of the universe through a hole in higher-dimensional space.\n\nThere is a compact region of spacetime whose boundary is topologically trivial but whose interior is not simply connected. Formalizing this idea leads to definitions such as the following, taken from Matt Visser's Lorentzian Wormholes:\n\nIf a Lorentzian spacetime contains a compact region Ω, and if the topology of Ω is of the form Ω ~ R x Σ, where Σ is a three-manifold of nontrivial topology, whose boundary has topology of the form dΣ ~ S², and if furthermore the hypersurfaces Σ are all spacelike, then the region Ω contains a quasipermanent intra-universe wormhole. \nCharacterizing inter-universe wormholes is more difficult. For example, one can imagine a 'baby' universe connected to its 'parent' by a narrow 'umbilicus'. One might like to regard the umbilicus as the throat of a wormhole, but the spacetime is simply connected.\n\n\n\nIntra-universe wormholes connect one location of a universe to another location of the same universe(in the same present time). A wormhole should be able to connect distant locations in the universe by bending spacetime, allowing travel between them that is faster than it would take light to make the journey through normal space. See the image above. Inter-universe wormholes connect one universe with another [1], [2]. This gives rise to the speculation that such wormholes could be used to travel from one parallel universe to another. A wormhole which connects (usually closed) universes is often called a Schwarzschild wormhole. Another application of a wormhole might be time travel. In that case it is a shortcut from one point in space and time to another. In string theory a wormhole has been envisioned to connect two D-branes, where the mouths are attached to the branes and are connected by a flux tube [3]. Finally, wormholes are believed to be a part of spacetime foam [4]. There are two main types of wormholes: Lorentzian wormholes and Euclidean wormholes. Lorentzian wormholes are mainly studied in semiclassical gravity and Euclidean wormholes are studied in particle physics. Traversable wormholes are a special kind of Lorentzian wormholes which would allow a human to travel from one side of the wormhole to the other. Sergey Krasnikov tossed the term spacetime shortcut as a more general term for (traversable) wormholes and propulsion systems like the Alcubierre drive and the Krasnikov tube to indicate hyperfast interstellar travel.
1040308
No one knows for sure.  The force of a wormhole theoretically can rip someone apart.
347123
Yes...and just paid off his bet to John Preskill in regards to whether information can escape from black holes.\n\nIn 1997 the three cosmologists Stephen Hawking, Kip Thorne and John Preskill made a famous bet as to whether information that enters a black hole ceases to exist -- that is, whether the interior of a black hole is changed at all by the characteristics of particles that enter it.\n\nIt now looks like Stephen Hawking and Kip Thorne may owe John Preskill a set of encyclopedias of his choice, since physicists at Ohio State University 'have derived an extensive set of equations that strongly suggest that the information continues to exist -- bound up in a giant tangle of strings that fills a black hole from its core to its surface.'
1160171
its a MATHIMATICAL prediction that warmholes (or "shortcuts" in spacetime... so you fly into black hole and boom you're in another part of the universe or another universe all together) exists\n\nUnfortunatly this prediction bares no physical merrit as neither the black hole is capable of "letting things fall through" nor is a "whitehole" capable of existing for more then one instance (aside the fact that it cannot form, period)\n\nThe mathematical model is beautiful though, if you know much math I suggest you check it out.!
19853
Their existence has been postulated, but more often in science fiction than in actual science.  Some suggest that quasars (which are extremely bright) are actually white holes, and that white holes are possibly connected to black holes via wormholes.  But white holes seem to violate the second law of thermodynamics, and therefore probably do not exist.
522523
When all matter, including light and time, is sucked into a black hole, an infinitely dense singularity occurs. With all this heavy-duty cosmic attraction going on, something has to give, right? Enter white holes. \n\nPut simply, the idea here is "what goes into a black hole must somehow come out." If a black hole tears the space-time fabric of "our universe" creating a wormhole, a white hole would be the entry point into the "other universe." Essentially, a white hole would be the mathematical exist that emits matter n light just opposite to black hole
1185518
Check out Stephen Hawking's site.  It contains theories and lectures.  If anyone's an expert on workholes, it's him.\n\nThis second site looks pretty good.\n\nA candidate for breakthrough propulsion physics has been identified in the form of a traversable wormhole created by virtue of ultrahigh magnetic or electric fields with an additional exotic energy component. Maccone (1995) claimed that cylindrically symmetric ultrahigh magnetic (electric) fields can create a traversable wormhole in the Morris and Thorne (1988) framework. It has been shown that this is incorrect. Instead, a hypercylinder curvature effect having a position dependent gravitational potential is induced. This effect can be used to create a wormhole by patching the hypercylinder envelope to a throat that is induced by either radially stressing the ultrahigh field or employing additional exotic energy. Maccone correctly showed that the speed of light through the hypercylinder region is slowed by the magnetic induced gravitational field there. This suggests a way to perform laboratory experiments whereby one could apply an ultrahigh magnetic field in a vacuum, thereby creating a hypercylinder curvature effect, and measure the speed of a light beam through it. While chemical explosive/implosive magnetic induction technology has achieved static field strengths of ~ several x 103 Tesla, the peak rate-of-rise of field is ~ 109 Tesla/sec. Field strengths > 109 - 1010 Tesla would need to be generated to impart a measurable slowing of light speed in this scenario. It is proposed that the peak rate-of-rise of field be exploited as a means to achieve this goal in the near-term. Magnetic induction technologies based on nuclear explosives/implosives may need to be considered in order to achieve results of larger magnitude. A Wormhole Induction Propulsion system has been introduced to exploit the possibilities of traversable wormholes.
312777
Yes, there's still research going on. And yes, the theory still holds that if we could find a wormhole and create enough anti-matter to widen and stabilise it, and then find a way of surving the journey, time travel might be possible.\n\nBottom line, everything that's a theory today will either be proved or disproved somewhere down the line. Some things, like wormhole time travel and single-lifetime interstellar travel are the scientific equivalent of steeplechases - races with big old obstacles in the way. They might seem impossible at the start, but once you start running, you either have to figure out how to leap over the obstacles or fall down at them. But human beings are good at steeplechasing - look at the challenges we overcame between 1899 and 1970 - we couldn't fly when the century began. By the time we were seventy years in, not only had we fought two world wars in the air, we'd successfully landed on the moon. Who knows what we'll achieve by 2070...
904688
There is a good book out there called "Black Holes, Wormholes & Time Machines" by Jim Al-Khalili. Check your local library. If you can't find it there, then you could probably find it online somewhere at like amazon or something.
486631
Assuming this is possible the end positioned inside the event horizon would be broken down into it's individual atoms and would cease to exist.  However some scientists (me being one of them) think black holes are only one end of a worm hole and that when you reach the event horizon you are expelled out of a white hole into another universe.  Think of a white hole as the polar opposite of a black hole, instead of consuming every thing it expels everything
794668
Well, black holes are mysterious simply because they are regions where light itself cannot escape!  If you go by general relativity black holes are singularities where space and time lose their meaning in the rational sense!  As for black holes leading to some location, most likely that is not the case.  Such an object is a wormhole, which is a theoretical solution to Einstein's field equations like black holes are.  But, wormholes have not been observed in nature and they are unstable to the point where if even a tiny amount of mass enters the wormhole it will collapse it and destroy the matter before it ever gets to the other side!  So, that being true a black hole has no opening somewhere else, because if it did it would collapse the same way.  However, Stephen Hawking showed that black holes do dissipate over many billions of years because of quantum tunneling.  Turns out some matter/energy actually gets out of the black hole!  So, we still have alot to learn about the nature of black holes, because we still have to learn alot about gravity!
663273
We have found black holes in the universe but never a "White hole". A white hole is a concept that arises out of tweaking Einstein's equation. Theoretically a white hole would be connected to a black hole through space time and it would spew out all the matter and energy that the black hole sucked in. The issue is that the white hole emerged from looking at einsteins equations in a vacuum with no matter. Mathematically this connection would be highly unstable and would most likely disappear as soon as it formed. But mathematically this situation could happen. It has never been found though. I hope that helped
74443
A so-called worm hole first needs a singularity to exist, and a singularity is a point of infinite mass contained within zero volume -- an impossibility. Even attempts to "create" a worm hole through mathematics fail. In other words, there's no such thing as a worm hole.
266283
There are two posssible answers to this question. One is : The Universe and the other is : A Blackhole.\n\nBecause, within a blackhole, nothing exists - it is undefined. You cannot exist inside a black hole. Time ends within a black hole. To escape a blackhole, is difficult unless you travel in the opposite (reverse) direction. What escapes out of blackholes are antiparticles. You have the concept of space time wherein at a time you can have parallel universes. At the event horizon you can look out but cannot escape out of a black hole. Since time comes to an end in a blackhole, it is a finite time, you cannot escape it, so it is repeated diamay. \n\nIn the universe, nothing is black or white. There are shades of gray. The universe is expanding still but at a lower rate. There is no end to the universe and hence we can say that the space curves in a special way. Time and space both expand in the universe and it encompassed dark matter and black holes. Time in a universe can be thought of as cyclic if you consider that time has no beginning. You cannot escape the space. You cannot hope to reach the end of the universe.
682072
No one to date has been able to create a wormhole although mathematically it should be possible there are many reasons why it is very improbable. Firstly a wormhole theoretically would decay supremely fast and to counteract this you would need an enormous quantity of negative energy to keep this open. For a wormhole of one meter you would need about as much energy as the sun has produced in its lifetime. Secondly there is no known way to create a wormhole. A wormhole theoretically is when you twist space time and you can connect two distant points with no space in between them. As of right now wormholes are just a weird concept that arises out of messing with einstein's relativity equations.
5272
A worm hole is a idea, not a proven fact. With that said, if a worm hole does exist, then its two points in space that are connected by a "shortcut" in the universe. Formed by a fold in space-time or bending of space-time via gravity or collapsed star or whatever. Anyway, it would be useful if somehow the ends could be controlled. If the ends could be controlled and moved this would lead to the time machine. Example, one end is taken at relativistic speeds away from earth and then returned, when it gets back you have a time machine. Because of the relativity effects, by going threw the "shortcut" aka worm hole, one could travel back and forth threw time. Of course the idea is just an idea and the technology needed may be impossible. Hope this is thought prevoking though!
238837
Decades ago the mathematician and physicist Stephen Hawkins set out to disprove the great myth of the Black Hole. In his attempt to disprove the theory of the Black Hole he instead ended up proving there existence through mathematical model. When we think of a telescope, we instinctively think of an optical telescope. Today we have radio scopes, X-Ray scopes, gamma ray scopes and the list goes on. I do not know of a single image of a real live Black Hole that has been taken. What they look for is the perbutations that surround a Black Hole based on mathematical model. I hope this helps.