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The Big Question: Is time travel possible, and is there any chance that it will ever take place?

By Steve Connor, Science Editor


Independent Graphics

Why are we asking this now?

Two Russian mathematicians have suggested that the giant atom-smasher being built at the European centre for nuclear research, Cern, near Geneva, could create the conditions where it might be possible to travel backwards or forwards in time. In essence, Irina Aref'eva and Igor Volovich believe that the Large Hadron Collider at Cern, which is due to be switched on this year for the first time, might create tiny "wormholes" in space which could allow some form of limited time travel.

If true, this would mark the first time in human history that a time machine has been created. If travelling back in time is possible at all, it should in theory be only possible to travel back to the point when the first time machine was created and so this would mean that time travellers from the future would be able to visit us. As an article in this week's New Scientist suggests, this year – 2008 – could become "year zero" for time travel.

Is this really a serious proposition?

The New Scientist article points out that there are many practical problems and theoretical paradoxes to time travel. "Nevertheless, the slim possibility remains that we will see visitors from the future in the next year," says the magazine says, rather provocatively.

It has to be said that few scientists accept the idea that the Large Hadron Collider (LHC) will create the conditions thought to be necessary for time travel. The LHC is designed to probe the mysterious forces that exist at the level of sub-atomic particles, and as such will answer many important questions, such as the true nature of gravity. It is not designed as a time machine.

In any case, if the LHC became a time machine by accident, the device would exist only at the sub-atomic level so we are not talking about a machine like Dr Who's Tardis, which is able to carry people forwards and backwards from the future.

What do the experts say about the idea of time travel?

The theoretical possibility is widely debated, but everyone agrees that the practical problems are so immense that it is, in all likelihood, never going to happen. Brian Cox, a Cern researcher at the University of Manchester, points out that even if the laws of physics do not prohibit time travel, that doesn't mean to say it's going to happen, certainly in terms of travelling back in time.

"Saying that the laws of physics as we know them permit travel into the past is the same as saying that, to paraphrase Bertrand Russell, they permit a teapot to be in orbit around Venus," Dr Cox says. It's possible, but not likely.

"Time travel into the future is absolutely possible, in fact time passes at a different rate in orbit than it does on the ground, and this has to be taken into consideration in order for satellite navigation systems to work. But time travel into the past, although technically allowed in Einstein's theory, will in the opinion of most physicists be ruled out when, and if, we develop a better understanding of the fundamental laws of physics – and that's what the LHC is all about."

Why is the possibility of time travel even considered?

It comes down to the general theory of relativity devised by Albert Einstein in 1905. It is the best theory we have so far on the nature of space and time and it was Einstein who first formulated the mathematical equations that related both time and space in the form of an entity called "space-time". Those equations and the theory itself do not prohibit the idea of time travel, although there have been many attempts since Einstein to prove that travelling back in time is impossible.

Is there anything to support the theory?

Lots of science fiction writers have had fun with time travel, going back to H.G. Wells, whose book The Time Machine was published in 1895 – 10 years before Einstein's general theory of relativity. Interestingly, it was another attempt at science fiction that revived the modern interest in time travel.

When Carl Sagan, the American astronomer, was writing his 1986 novel Contact, he wanted a semi-plausible way of getting round the problem of not being able to travel faster than the speed of light – which would break a fundamental rule of physics. He needed his characters to travel through vast distances in space, so he asked his cosmologist friend Kip Thorne to come up with a possible way of doing it without travelling faster than light.

Thorne suggested that by manipulating black holes it might be possible to create a "wormhole" through space-time that would allow someone to travel from one part of the Universe to another in an instant. He later realised that this could also in theory be used to travel back in time. It was just a theory of course, and no one has come close to solving the practical problem of manipulating black holes and creating wormholes, but the idea seemed to be sound. It spawned a lot of subsequent interest in wormholes and time travel, hence the latest idea by the two Russian mathematicians.

Apart from the practicalities, what's to stop time travel?

The biggest theoretical problem is known as the time-travel paradox. If someone travels back in time and does something to prevent their own existence, then how can time travel be possible? The classic example is the time traveller who kills his grandfather before his own father is conceived.

Cosmologists, renowned for their imaginative ingenuity, have come up with a way round this paradox. They have suggested that there is not one universe but many – so many that every possible outcome of any event actually takes place. In this multiple universe, or "multiverse" model, a woman who goes back in time to murder her own granny can get way with it because in the universe next door the granny lives to have the daughter who becomes the murderer's mother.

Where does this leave the time machine in Geneva?

The science writer and physicist John Gribbin, who explains these things better than most, points to a saying in physics: anything that is not forbidden is compulsory. "So they expect time machines to exist. The snag is that the kind of accidental 'time tunnel' that could be produced by the LHC in Geneva would be a tiny wormhole far smaller than an atom, so nothing would be able to go through it. So there won't be any visitors from the future turning up in Geneva just yet. I'd take it all with a pinch of salt, but it certainly isn't completely crazy."

So, not completely crazy, just a bit crazy.

So will we one day be able to travel into the future?

Yes...

* There is nothing in the laws of physics to prohibit it, and events in Geneva are pointing the way and could be a first step

* In physics, so the saying goes, if nothing is prohibited, it must happen at some point

* All we need to do is to work out how to manipulate black holes and wormholes, and away we go

No...

* The practical problems with time travel are too immense to solve, and even if you could, who would want to?

* You might travel back in time and kill one of your grandparents by accident. Then where would you be?

* If time travel is possible, why are we still waiting to welcome our first visitors from the future?

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Comments

you can only be here at this moment
[info]quanmin wrote:
Saturday, 7 February 2009 at 11:11 pm (UTC)
There is a fundamental difference between mathmatic and physics. In mathematics, you can play with equations and many processes are indeed reversible. Hence, in mathematics you can travel whereever you wish to.

However, in the physics world, things happen sequentially and there is no way you would break this law.
You cannot travel to the past, and you cannot travel to the future. You can only be here and at this very moment. Scietists should stop misleading the innercent public.


Dr Quanmin Guo
School of Physics and Astronomy
University of Birmingham
Q.Guo@bham.ac.uk

Re: you can only be here at this moment
[info]christian_sch wrote:
Friday, 28 August 2009 at 03:29 pm (UTC)
Absolutely nothing is impossible, the only thing impossible is to convince people like yourself about the possibility of the unknown.

Dr. Guo, "Scientists" like yourself have claimed, space travel, heavier than air travel, underwater travel and what not impossible, they all were proven wrong and so will you.
Time travel is possible
[info]drjames1 wrote:
Thursday, 19 February 2009 at 02:59 am (UTC)
I am convinced time travel is possible me and a team are currently looking at every aspect of time travel so far we are convinced that it is possible and we may have found a way to do it,
Its just a matter of time till we have our project complete i would say in less then three years we will have conquored time travel.

Although i do agree with the comment before me the public should not be told it is possible because if the public all do belive it is real there will be countless attepts to travel through time which could create a black hole which would end physics and life as we know it.

Dr James M.V Smith
Former Gov Scientist & Tutor of University of Manchester
Englandjb@hotmail.com (Temp Email Adress)
[info]fishton wrote:
Monday, 2 March 2009 at 01:27 pm (UTC)
Hello,

I am from the future. I have time-travelled. It was a wonderful journey, and I am please to be here.

Forget about sequences, Dr Guo. The physical world is not one big sequence, and I am sure you will agree, mathematics and the physical world are closely related.

As for you, Dr. Smith. I have seen your future, and your project fails. I am sorry to be harsh about it.

Hint on time travel projects: to succeed, it starts and ends with the mind.

Mr. R. Fishton
Time travel is impossible
[info]paulkellett wrote:
Wednesday, 4 March 2009 at 04:25 pm (UTC)
Time travel sounds good in theory, as a fantasy of the human mind, as a dream, but in reality its a lot more complicated than just 'time traveling'. There is always one fundamental point that is overlooked within this field, and that is one of 'getting home' or getting back to where you started.

If someone were to find a way to time travel they certainly wouldnt be able to come back the ultimate present. The moment you leave Point A, you ultimately become a time traveller non-stop, there is absolutely no way you could ever come back to the current time we are in now and as we know it. By definition, you would always be traveling behind it.

You might be able to return to Point A, the time you left to start your travels, but once you returned it would be in itself 'in the past' as time from the moment you left Point A did not stand still for you, it carried on. So therefore you become a prisoner to time itself.

To transport yourself back into our reality and time zone, you would need to know its exact positon right now. If you are in another time zone you would have no way of knowing that. Even if you managed to get close to it, and lets say you have a machine that gets you to a billionth-billionth of a second close, you would still be 'behind' the current time, so therefore everyone you knew wouldnt be the same. Even a billionth-billionth of a second, in terms of time travel, is eternity.

For you to arrive right in this very moment there would only ever be one possible way and that would be the ability to 'stop time' as we know it. This is impossible, because 'time' by its very nature doesnt stop.

Imagine you invent time travel, it would be like taking a single drop from a wave in the pacific ocean, off onto the beach, out into the forest, then bringing it back and placing it in the exact same wave in the exact same spot in order to return to the moment. All the while of course, the wave hasnt stopped moving, however small it has become, and so finding the exact same spot to place your little drop into, is impossible. Again, the only way you could do it would be to freeze time...freeze the wave as it was when you left, so you knew the exact moment and time to come back to.

So time travel may be 'possible' in one sense, but you or i would never know because the person who decided to take the trip would not be able to come back into the 'very moment' to tell us so. They would in effect, always be chasing our shadows.
Re: Time travel is impossible
[info]thomasbaird wrote:
Sunday, 5 April 2009 at 11:04 pm (UTC)
What if I made a appointment to meet you next week at a certain place from the departure point.I would depart from the Now/Present and do my time traveling and then set point in time to go to the appointment time I set with oyu and I would materlizeat that point in time that wolud be the present for me and for you. Remember He or She who has the time machine can make there presnet anywhere they want and if its back in the past they will know whats going to happen.If its in the future they wont know whats going to happen.Its really not that complicated. We are living on a planet.spinning around and traveling through space and time being pulled around by the SUN in our solar system within our Galaxy the Milky Way.Yeah I believe Time Travel is possible just as real as being here on planet earth.
time traveler
[info]dragon_des wrote:
Friday, 13 March 2009 at 11:49 pm (UTC)
who to say there has not been a time travler how would we know if thay were.

if there were time travlers would you want to tell any one, all you would get what next weeks lotto numbers.

the big ? is could you get the fucher 100% writ untill then the pass is not what shoul be mess with, put it this way how would you know if you went back and kill hitla that would be the best thing to do, you set it up for some one who was much more of a tot git, so the thing we should be doing is to find out the fucher so we could try and avould the bad parts the a come up and not look to the pass and see what we mith beabla to fix.
if its possible!!!!
[info]yash_jug wrote:
Saturday, 14 March 2009 at 09:35 pm (UTC)
it will mean the poor people will become more poor,and the rich will be in the sky,its also mean that there would be war.some people can creat new things and while some other people can steal the invention of others!!! It will be a dissaster,human will perish.
Believer
[info]independent_gal wrote:
Thursday, 19 March 2009 at 08:00 pm (UTC)
i believe its possible, all we need to do is BELIEVE
i think so
[info]independent_gal wrote:
Thursday, 19 March 2009 at 08:09 pm (UTC)
ok, ill come right out and say it, Im not a scientist! Im not going to tell you that i am because straight out IM NOT. Im just the average ordinary every day person posting my thoughts.

I believe its possible, i mean if people would REALLY try hard enough almost anything is possible. I'll bet centerys ago people thought it was IMPOSSIBLE BEOND ALL REASON to fly. They didn't meet the wright brothers. As for cars? why bother we have horses for that! Humanity has come so far with people who believed. And i think if we tryed hard enough we CAN time travel!
*just my thoughts =)
A Financed Paradox.
[info]doversole_13 wrote:
Wednesday, 1 April 2009 at 11:04 pm (UTC)
There is one, yes, it's an issue, I don't know, don't think, if I can - still? - fail to mention to you, what, if money in any way & for whatever why behaves likes anyone's compromise? A.: If that's the big com-plication, anyone of you is in case of doubts welcome to repeat them to me, a personal or public issue, so that I can of course tell & e.g. help us both etc., whoever's who, find out & our best answers to, who is who, why & when, greet's, arentved@in.com. I'm not picking on you for it, so I don't see any risk, whatsoever that I can fail to mention it to you.
Time Travel is Possible.
[info]thomasbaird wrote:
Sunday, 5 April 2009 at 09:14 pm (UTC)
We travel through space time everyday of our lives from the present into the future at a set controlled speed.The so called time machine is to be used to control direction of space time foward or backward and being able to return to the spacetime present you left when you the time traveler departed or the present of where you should be according to the amount of time you have been gone from the present, or the time you departed.Rideing in the time machine allows the traveliver to choose the time they want to materlize in that will be at that point in space time a present time for all there in space time moving forward in a controlled set speed, or normaltime, or the Now Time, in this 3 dimentional space time we are existing in.As for the current device being used that may allow time travel of some sort.But not enough room for a time traveler to ride along in a life sustaining safe so called time machine. Perhaps a message can be sent through time , some sort of communications through the worm hole in timeto communicate with others on the other end in the past or the future.Send messages through time may be just the start.Perhaps in the future they have already figured out how to make the time machine for a real time traveler to travel through space time.And if so it will be classified top secret and the public wont even know it exists in reality. Our National Defense will have one for sure if anyone has one that you can be sure of.Time travel is to important to let it be made public for all to be able to take a time joy ride to explore history, or time traveling for siteseeing as a tourist. Somebody might mess up and try to change something that shouldnt be changed if you know what I mean. TEC. VIZ. Time Travel is and will only be for allowed by those who are qualified to do so. Cahnging anything in the past by interferring with a past event in history to change it creates a ripple effect. Like dropping a stone in a calm pond it creates ripples in time that would make changes in the future form that point of change. Yes Time Travel is possibleand can be very helpful in the right hands but in the wrong hands it could be a diaster for mankind. So take it serious in your experments with time travel communication keep it top secret for all our sakes.The must be order,Time law enforcement it must be policed and controlled and made safe.Thomas W. Baird 04-05-09
Time Travel
[info]thomasbaird wrote:
Sunday, 5 April 2009 at 10:53 pm (UTC)
You see Time Travel is a National Security issue. If it can be done we the U.S.A. needs to have it first and if not first we need to have the capibility to travel in Time to just stay up with others and or our enemies that already have it.You see its in the best interest of our National Security to have Time Traveling capibility if anyone is going to have it.If not and they get it and we dont, that my friends will be a big problem for us, and the sad thing is we wont even know that anything has been changed if and when it is changed.So in other words who ever has the time travel capibility has the upper hand and is in control of the shape of the future.You see if they dont like something they can go back in time and make changes that we wont even know they made.If we are even still alive after the change is made.Might not even be born with the change in time taking place.TEC.viz.
Perhaps H.G. Wells ,Time Machine ,may end up being right on track all along.Just need to build it and make it work.Then who can be trusted to travel in it?
Time Travel issues
[info]comixmaniac wrote:
Monday, 6 April 2009 at 06:36 pm (UTC)
Practically everyone who has thought about time in general has probably wondered about the possibility of time travel. Imaginations leap to some pretty strange ideas.

In my mind, there are several possibilities.

One: time being, in theory. infinite, man can likely do anything he contemplates, if he survives long enough to gain and use the knowledge he gathers. Time travel, in this scenario, is not only possible, but likely inevitable.

Two: time does not actually exist except as a relative concept in the human mind and therefore could never be manipulated physically, only through mental excursions into the ether. In fact, some ancient teachings state that NOTHING actually exists and everything we experience is of our own creation.

Three: all of time exists all at once and our limited ability to actually "see" time is like that of a tape recorder head playing only the present, able to "review" the past and "guess" the future, but in reality unable to perceive that the "time" we live in is like a book on a shelf with many other books surrounding it. I like this scenario because while it limits time to just those things that are possible, it creates a type of freedom by which anyone can choose the book they are in at any given time without totally destroying the concept of predestination as a rule.

If, for example, all of time exists all at once and every possible outcome has already been and is simply somewhere out there (whatever out there means), waiting for us to make a conscious decision and create the instant we live in simply by, say, turning right instead of left, then we have free will, but not the ability to step outside of the pattern already predetermined since the pattern itself represents all that is possible. Another way of looking at it? What if, simply by imagining I COULD be or do something, I already had somewhere, sometime in say, another alternate time stream?

What if, when the universe was first formed, instead of being limited to the time stream we live in, the universe (or multi-verse, if you prefer) was actually comprised of all the things that were possible or could ever BE possible?

Time, then, would be shaped like a huge sphere, comprised of many almost infinite possibilities. In fact, time would actually BE infinite until it reached an event or series of events that were simply not possible.

At the beginning of the sphere a single event, say the big bang, would created a time stream, but as events became more and more influenced by each other, time would break out and branch into all sorts of variant patterns, stretching as far as the possibility of events could occur, only ending where events simply were not possible, ever branching out until they reached a point of absolute saturation, a center or "equator" of the time sphere, where the absolute number of events that could occur, had, indeed, occurred. Then, because the absolute number of possibilities was reached, less and less things would become possible. Time would begin to fold back in on itself. Time streams would become fewer and fewer, eventually culminating in a sort of reverse big bang where time would then collapse upon itself.

Now, IF this scenario is reality, we have just encompassed two very opposite ideas, without contradiction in either of them. One, all time is predetermined and predestined and two, despite this, we all have free will to do anything we wish, but won't because some things, whether we wish them or not, are simply not possible for whatever reason.

I don't know if time travel is possible, but if it is, it certainly exists. That we don't know of it is not even a case for it not existing. Too many variables and too many possibilities are at play here. Until we can understand the workings of our own minds and thoughts, we may never understand the complexities of time. Until we can step outside of the human experience and capture a true perspective of the universe, unemcumbered by our own humanity, or at the very least, our own real estate, we may never understand much of anything in its entirety.
Re: Time Travel issues
[info]thomasbaird wrote:
Wednesday, 8 April 2009 at 07:29 am (UTC)
Interesting,I do believe Time Travel is possible. For a person the flesh,the physical body,to be able to travel in and through time, as Jules Vern showed us in His movie, "H.G.Wells Time Machine" a style, model of a Time Machine that He created,that would be sufficent a two seater preferred to make the journey through time.Forward or backward in a controlled manor while life support and supplies is supplied for the Time Travelers. Remember H.G. Wells Time machine travelled through just Time not space and time. Where He took off from is where he materlized back at but in another time.So my friend all we need to do is to invent the Time Machine, or put it together and get it working correctly and then draw straws on who gets the first Time Trip.It will be a Historic event but cant tell the media.When you think about it we do really need a Time Machine especially for our National Security.It could do alot of good to help prevent alot of bad stuff from ever happening.Some say thats messing with normal events that were supposed to happen and we should not interfer and make any changes even if its for the better.I say if we cant use the Time Machine to do good,for good then what good is it then?If you can prevent a diaster and you dont then your actually guility of letting it happen and not makeing change by preventing it from happening.Who is to decide what gets changed and what does not?How about a Time Traveling Council.It gets voted on.Majority wins.Time traveler is sent back makes the change, prevents it from happening, crises prevented. Some say that the future isnt there yet to travel to. But how does one know for sure that the time you think your in is the present, when it could be the past of the future. You see I believe Time is not just now but is comprised of the three time zones,Past-Present-Future.That are actually existing at the same time. With a time machine we can go back and make changes to something that happened in the past and that will cause changes to occur in the future from that point in time not just from where you left from.So even in the Present Time ,the Now we make decisions and what to do and that is effecting the future from the present we are in that we believe that our present is the real absolute present and can be only one present. But consider the present we are in is moving forward through time 24/7 never stops.So we all are traveling slowly through time all at the same time.as we move forward into the future and it unfolds as we arrive into it like arriveing into a new day.So is Time travel possible ? Of course. We do it on a daily basis.But what we need is the Time Machine that we can ride in and have control of where in time we go. Long ago they said the wright brothers were crazy about building a airplane,Henery Ford wanted a V-8 engine and his engineers said it was impossible, Mr Ford said I want a V-8 engine and Ill have a v-8 engine. Get it done, make one, make it happen.Soon after a V-8 engine was created.Thomas Edison finally made what He set out to do and now we have lights.So we need a Time Machine we want a Time Machine so we shall have a Time Machine,they say its impossible but Ive heard that line before in history so get it done,make the Time Machine make it happen, its it time to arrive on the scene as did light.E=MC2.viz. Just dont tell the media must be kept secret.
Time Travel
[info]thomasbaird wrote:
Thursday, 9 April 2009 at 09:12 pm (UTC)
Time Travel is possible, infact there could already be some amoung us that have traveled back for the future to sometime in the past and is useing the information about what they know ab out what is going to happen by reading it in there history events reports.So they travled back in time and can get with someone they know and give important information for them to profit from etc.as new investments are made do to the information they know will be right they can make a fourtune on the info.The change to there bank accounts in the future will be huge and no one will be the wiser or even know about the past inside information they are receiving back in thepast.
And also they could be making changes in the past to help them in the future as they make the changes in the past we dont even know they were made because we dont realize the change do to being in the present from where they made the change.
So do you see how important it is to have Time Travel being controlled by our leadership National Security, Defense Deptartment? And not just some billionaires who had a scientest create a time machine just for them to use forprofit.
Yes Time Travel is possible.
[info]thomasbaird wrote:
Saturday, 11 April 2009 at 06:54 am (UTC)
All we need is the time machine to transport us through time to where we want to go in time.Must be in control of where we go in time or one would end up being lost in time not sure if they could get back.Dont want it to be a, say your goodbyes its a one way ride.Perhaps we could send the time ship when its built on autopilot, driven by the onboard programmed computer robot.Like when we send out a space probe to mars.It lands takes pictures and then comes back or sends pictures back to us and or a radio message to us from where it is in time, if it can.Program it to go forward or backward in time take some pictures of a calender with the date on it and surrondings and return to us in present say 10 minutes from when it departed.That way it would of been gone only for 10 minutes our time. Then if it makes it back safely then one of you can take it for the next time ride.I think the time machine should be more like a space craft small two seater. enclosed has its own life support and supplies etc.You see it will be traveling through time simular to traveling through outter space.May need to wear a space suit never know where you might end up to be able to return.Dont just go jumping through a worm hole with no protection , no ship no lunch etc and no plan on how to get back and hope you make it to someplace else in time. We are a people like were before the car and plane was invented they didnt think it was possible until it was created.and then there was real time travel.
Time Travel has its benifits
[info]thomasbaird wrote:
Saturday, 11 April 2009 at 07:13 pm (UTC)
When you take a trip into the future and back please bring me a winning mega lotto numbers, the winning ticket numbers for the jack pot, mega millions lotto, I need the money.
time travel
[info]freddibner wrote:
Saturday, 11 April 2009 at 11:30 pm (UTC)
The last poster is on the right lines, no sane person wants to travel in time, what they want is some way to receive communications from the future. The first nation or group of states that masters this technolgy will steal a massive advantage.

Who knows, may be there is an ulterior reason why so much money is being spent on the CERN project........hold on......i.m getting a message from the future......."no, its just one massive waste of money and it wont work"
Time Travel is Possible.
[info]thomasbaird wrote:
Wednesday, 15 April 2009 at 05:02 am (UTC)
We travel in time every day as we travel in space we just dont have control of the direction we travel in time yet without the time travel device.Some Time In Time the Time Machine will arrive in Time.


Time travel in theory
Some theories, most notably special and general relativity, suggest that suitable geometries of spacetime, or specific types of motion in space, might allow time travel into the past and future if these geometries or motions are possible.[9] In technical papers physicists generally avoid the commonplace language of "moving" or "traveling" through time ('movement' normally refers only to a change in spatial position as the time coordinate is varied), and instead discuss the possibility of closed timelike curves, which are worldlines that form closed loops in spacetime, allowing objects to return to their own past. There are known to be solutions to the equations of general relativity that describe spacetimes which contain closed timelike curves[citation needed], but the physical plausibility of these solutions is uncertain.

Physicists take for granted that if one were to move away from the Earth at relativistic velocities and return, more time would have passed on Earth than for the traveler, so in this sense it is accepted that relativity allows "travel into the future" (although according to relativity there is no single objective answer to how much time has 'really' passed between the departure and the return). On the other hand, many in the scientific community believe that backwards time travel is highly unlikely. Any theory which would allow time travel would require that issues of causality be resolved. The classic example of a problem involving causality is the "grandfather paradox": what if one were to go back in time and kill one's own grandfather before one's father was conceived? But some scientists believe that paradoxes can be avoided, either by appealing to the Novikov self-consistency principle or to the notion of branching parallel universes

Time travel is the concept of moving between different moments in time in a manner analogous to moving between different points in space, either sending objects (or in some cases just information) backwards in time to a moment before the present, or sending objects forward from the present to the future without the need to experience the intervening period (at least not at the normal rate). Some interpretations of time travel also suggest that an attempt to travel backwards in time might take one to a parallel universe whose history would begin to diverge from the traveler's original history after the moment the traveler arrived in the past.[1] Although time travel has been a common plot device in fiction since the 19th century, and one-way travel into the future is arguably possible given the phenomenon of time dilation based on velocity in the theory of special relativity (exemplified by the twin paradox) as well as gravitational time dilation in the theory of general relativity, it is currently unknown whether the laws of physics would allow backwards time travel. Time travel has not been proven to be impossible nor possible. Any technological device, whether fictional or hypothetical, that is used to achieve time travel is known as a time machine.



"TIME SLIP"
time slip (also called a timeslip) is an alleged paranormal phenomenon in which a person, or group of people, travel through time through supernatural (rather than technological) means. As with all paranormal phenomena, the objective reality of such experiences is disputed.

To Travel and or Communicate through Time
[info]thomasbaird wrote:
Wednesday, 15 April 2009 at 05:08 pm (UTC)
Seems to me to be able to just communicate with some one in the past or future would be a huge achievement.We wouldnt need to actually physcially travel in a time machine to here or there in time but could make the call to the past or future and communicate with them from our present time, the NOW.Then it would be what one would say to them or would one answer the questions from the one in the past and in so answering might change the present we are in now or we could answer question from the one in the future and ask how things are going etc.But they knowing that if they tell us here in the present how the future is we can make changes so that futre will be change for the better but they might not like that.But if the present and or the future was really bad They would probably agree on changeing it for all our sake and give us the necessary information to make it so the real bad stuff didnt happen then afterwards, need to run a dionostic and see what has changed, if we remember it at all.But once the change takes place nobody will remember it except the one in the past from where the change was made from.Then when someone traveled or talked to someone from the future after the change was made the one in the past could tell if it worked or not.But keepong it in mine that we make changes to improve the situation to make it better by eliminating or at least decreasing the causes of the crises and in so doing might prevent it from happening.Hopefully it will be a positive change for the better for all our sakes even though we wont remember it even AI wont remember it.But if one had a real time machine and could do the actual time traveling they could pass on the information on whats going on in the past,present and futureand then make the necessary changes and then witness it and make notes on the changes etc and make the necessary ajustments.It would be better to have the actual time machine but just be able to communicate with the different times zones will have to sufifice for now.So the one in the past if they still had communications with the future and could still find out how things are going etc, could continue to make changes in the past until they got it right or corrected the mistake etc.So do you see the bennifit of Time Communication?We dont have to have a time machine to find out whats going on in the future we already know how the past was and how the present is its the future on how things will be that is subject to change from the point in time from the furtest back in the past from where the changes are made."message in a bottle" sent back in time.or message from the past sent to the future. Message from the past how are thoings going? Message forthe future help its a mess should be changed. Why what happened to lead to the mess?etc.
What If The Time Machine is already here and being used now?
[info]thomasbaird wrote:
Wednesday, 15 April 2009 at 05:53 pm (UTC)
You see the Future is changable made to be changed by the decisions we make here in its past or our present.But who is to say that this present we seem to be in is actually the real NOW, presnet in Time and not the future of a moment in time in the past from where we are?For example if we could make radio contact with the past. We could say alert our military of the attack on Pearl Harbor in Hawaii in 1942 and many lives would be savedand US Ships.Perhaps not able to prevent the attack on Pearl Harbor in Hawaii,but be prewarned and know it was coming. Do you think that would be a good thing to change or not or just let it happen?What would be changed?How would we know if the change took place or not? If Japan never would of attacked our US Fleet at Pearl Harbor and gone to war againt us they wouldnt of ended up having atomic bombs dropped on some of there cities to end the war with them.Just keep making changes and fine tuning it until its satisfactory good enough. Dont mess with Bible History or youll get God involved.God has a plan for this creation we are in and things are set in motion and some things cant be changed.Some things are programed to happen and cant be changed and some things can be changed because it doesnt effect Gods plan for the future of this creation.Could it be that we are in one of the creations of the "Supreme Creator"that created some Gods to create their creations and then some day be judged by what they have created and done with there creations and or graded on there creation projects. and that there may be other creations other than the 3D space time creation we have been created to live in and experience by the God of this creation ,that we are not awhere of. And perhaps if we do travel in a time machine we might find ourselves in one of the other creations in another space time.So make the time machine more like a time capsule has life support or a submarine that travels through time for its passengers to be safe and have supplies to get them by for a while in case they get lost in time etc.
Time travel is nonsense
[info]tboonepickens wrote:
Wednesday, 15 April 2009 at 09:59 pm (UTC)
Of course going back in time is impossible. It's an exercise in meaninglessness!
First of all, who says time is something that you "can travel" anyways? Time is simply change; nothing more and nothing less. You can't travel change can you? Makes no sense.

In this sense you can have more change (like time "speeds" up), less change (like time "slows" down), or no change (like time stays "still"), but you can't have negative change. I hope that clears things up. Also, even if the "alternate universe" theory is correct (which I HIGHLY doubt) you would still NOT be traveling to the past through time; instead, you would be traveling to alternate universes. Also, c is the universal speed limit...it is the speed of time! Once you reach c you will have used up all of the available time in the universe!
Worm Hole Time Travel
[info]thomasbaird wrote:
Thursday, 16 April 2009 at 05:05 am (UTC)
Main article: Wormhole
Wormholes are a hypothetical warped spacetime which are also permitted by the Einstein field equations of general relativity,[18] although it would be impossible to travel through a wormhole unless it was what is known as a traversable wormhole.

A proposed time-travel machine using a traversable wormhole would (hypothetically) work in the following way: One end of the wormhole is accelerated to some significant fraction of the speed of light, perhaps with some advanced propulsion system, and then brought back to the point of origin. Alternatively, another way is to take one entrance of the wormhole and move it to within the gravitational field of an object that has higher gravity than the other entrance, and then return it to a position near the other entrance. For both of these methods, time dilation causes the end of the wormhole that has been moved to have aged less than the stationary end, as seen by an external observer; however, time connects differently through the wormhole than outside it, so that synchronized clocks at either end of the wormhole will always remain synchronized as seen by an observer passing through the wormhole, no matter how the two ends move around.[19] This means that an observer entering the accelerated end would exit the stationary end when the stationary end was the same age that the accelerated end had been at the moment before entry; for example, if prior to entering the wormhole the observer noted that a clock at the accelerated end read a date of 2007 while a clock at the stationary end read 2012, then the observer would exit the stationary end when its clock also read 2007, a trip backwards in time as seen by other observers outside. One significant limitation of such a time machine is that it is only possible to go as far back in time as the initial creation of the machine;[20] in essence, it is more of a path through time than it is a device that itself moves through time, and it would not allow the technology itself to be moved backwards in time. This could provide an alternative explanation for Hawking's observation: a time machine will be built someday, but has not yet been built, so the tourists from the future cannot reach this far back in time.

According to current theories on the nature of wormholes, construction of a traversable wormhole would require the existence of a substance with negative energy (often referred to as "exotic matter") . More technically, the wormhole spacetime requires a distribution of energy that violates various energy conditions, such as the null energy condition along with the weak, strong, and dominant energy conditions.[21] However, it is known that quantum effects can lead to small measurable violations of the null energy condition,[21] and many physicists believe that the required negative energy may actually be possible due to the Casimir effect in quantum physics.[22] Although early calculations suggested a very large amount of negative energy would be required, later calculations showed that the amount of negative energy can be made arbitrarily small.[23]

In 1993, Matt Visser argued that the two mouths of a wormhole with such an induced clock difference could not be brought together without inducing quantum field and gravitational effects that would either make the wormhole collapse or the two mouths repel each other.[24] Because of this, the two mouths could not be brought close enough for causality violation to take place. However, in a 1997 paper, Visser hypothesized that a complex "Roman ring" (named after Tom Roman) configuration of an N number of wormholes arranged in a symmetric polygon could still act as a time machine, although he concludes that this is more likely a flaw in classical quantum gravity theory rather than proof that causality violation is possible.[25]

is their any tiem machine
[info]coolassniger wrote:
Thursday, 16 April 2009 at 07:09 pm (UTC)
if their was any time machine why dont the people from the future come back....
if their is any time machine would like to be the first one to travel time.....
if their is any time machine
[info]coolassniger wrote:
Thursday, 16 April 2009 at 07:11 pm (UTC)
if their is was any time machine why dont the people from the future come back...if there is any time machine i would love to be the first one to travel time..."time traverlers"...............
time
[info]robert9881 wrote:
Saturday, 18 April 2009 at 03:41 pm (UTC)
what concerns me if time travel was possible there would always be someone to use it as an advantage or weopon, if anyone manages to solve the problem of time travel let me know so i can go back in time to put the lottery on.

i believe anything could be done and that most things we are not supposed to do ie time travel we are not responsible enough some things are better left alone and not explored.
Back from the future or was it the past?
[info]thomasbaird wrote:
Tuesday, 21 April 2009 at 06:08 am (UTC)
Back In Time from the future.Thought I turned off the time machine before I got out,stranded here until they send out a rescue team for me.Or Ill have too just stay here and live out the remainder of my life.Anyone know where I can get a good ID?The thing about having been in the future form here is you cant tell anyone anything because it might change the future from where I was and it wont be the same.You see the future can be changed and those in the future dont want it changed, well sometimes changes are permitted to do a good deed for allWhen something real bad happens.So when a change is noticed they send back a time enforcement agent and the agent is to correct or prevent what caused the change so it will return the future time back to how it was.So you ask why dont we get visits from the future by time travellers? Because they dont want to make any changes in there present time where they are from.If they traveled back in time and told there story they might change things at there present home time in the future from where they are from.Some one could even perhaps steal there time machine and leave them behind and go futher back in time and make changes etc.You see how dangerous and complicated it is.There is a movie called Time Cop that has a good concept on time travel and shows how things can be changed and people dont even realize that a change took place.Hopefully the change is for the better and is justifiable.Some times minor changes are made and the ripple in time is so small it doesnt cause any major changes at all.Of course one can travel through time and not change a thing just observe,go to certain time in history and watch some of the great moments in time etc.But there is always some who want to use time travel for there own gain at any cost and that is unacceptable and cant be allowed.You see there must be Order in Time Travel ,if not then there is just Time chasos and thats unacceptable and cant be allowed.So when changes are made we dont even know it took place, we all just keep on moving forward through Time.
[info]getgetup wrote:
Monday, 27 April 2009 at 01:21 pm (UTC)
Time travel is such an unbelievably complicated subject, but I still love hearing thought leadership on the subject!! Its so exciting!
Mega Millions April 2009 Lottery Winners
[info]thomasbaird wrote:
Monday, 27 April 2009 at 08:36 pm (UTC)
I hope Im not too late, My time device reads 03/31/09 Might need ajustment. 50/50 thomasbaird.blogspot.com

Date Winning Number Draw
4/24/2009 9, 20, 21, 48, 49 Mega Ball = 7
4/21/2009 5, 24, 37, 47, 52 Mega Ball = 6
4/17/2009 5, 13, 26, 35, 45 Mega Ball = 32
4/14/2009 4, 11, 22, 48, 50 Mega Ball = 42
4/10/2009 18, 25, 36, 42, 51 Mega Ball = 22
4/7/2009 2, 4, 13, 17, 36 Mega Ball = 15
Time is thought of incorrectly !!!
[info]geotheologist wrote:
Sunday, 24 May 2009 at 10:36 am (UTC)
No, time travel will NEVER be possible, except in the way it travels forward at the moment as a consequence of motion.

Time is viewed incorrectly.

Time is a consequence of objects in motion, not objects moving through time.
What happens in movies for example the X-Men movie, "when time is stopped", NO, time did not stop, the motion of everyone has stopped and "frozen" at the same speed as everyone else who has been frozen and as a consequence it looks as if time has stopped for these people from the point of view of the few X-Men for whom time had not stopped, but they are not "frozen in time" as the saying goes for they were never in time, but they were in motion and that motion stopped with relation to those who didn't stop, it's all relative you see.

Perhaps a clearer understanding of relativity is needed.

Imagine I am god and I want to create a universe in the shape of a clock with a face and the three hands that may denote the speed at which I want time to run and that can only move in one direction, clockwise to be precise. My universe (clock) has no time until I make the decision to move the second hand one tick to the right, then my universe is only one second old, then time is frozen again until I decide to move it again one tick to the right, now it is two seconds old. The fundamental point is that the time in my universe is as a consequence of the change in motion of the hands, but sometimes the hands can be quicker than the eye, and therefore time can seem to flow continuously.

Is all that I have said a correct assertion or am I looking at time incorrectly? Any comments would be great fully received, I like thought provoking people. Ask me about my theories on time's relation to matter, consciousness' relation to matter and therefore time's relation to consciousness if you like.
Ever felt time has seemed to zip by when having fun or dragged on when being bored?



Geoff Shaw
the-orist, Anylist, Physicist and Philosopher.
Universe of my consciousness
geoffshaw_47@hotmail.com
Re: Time is thought of incorrectly !!!
[info]thomasbaird wrote:
Wednesday, 27 May 2009 at 04:57 pm (UTC)
Time travel in theory
Some theories, most notably special and general relativity, suggest that suitable geometries of spacetime, or specific types of motion in space, might allow time travel into the past and future if these geometries or motions are possible.[9] In technical papers physicists generally avoid the commonplace language of "moving" or "traveling" through time ('movement' normally refers only to a change in spatial position as the time coordinate is varied), and instead discuss the possibility of closed timelike curves, which are worldlines that form closed loops in spacetime, allowing objects to return to their own past. There are known to be solutions to the equations of general relativity that describe spacetimes which contain closed timelike curves[citation needed], but the physical plausibility of these solutions is Using wormholes

A wormholeMain article: Wormhole
Wormholes are a hypothetical warped spacetime which are also permitted by the Einstein field equations of general relativity,[18] although it would be impossible to travel through a wormhole unless it was what is known as a traversable wormhole.

A proposed time-travel machine using a traversable wormhole would (hypothetically) work in the following way: One end of the wormhole is accelerated to some significant fraction of the speed of light, perhaps with some advanced propulsion system, and then brought back to the point of origin. Alternatively, another way is to take one entrance of the wormhole and move it to within the gravitational field of an object that has higher gravity than the other entrance, and then return it to a position near the other entrance. For both of these methods, time dilation causes the end of the wormhole that has been moved to have aged less than the stationary end, as seen by an external observer; however, time connects differently through the wormhole than outside it, so that synchronized clocks at either end of the wormhole will always remain synchronized as seen by an observer passing through the wormhole, no matter how the two ends move around.[19] This means that an observer entering the accelerated end would exit the stationary end when the stationary end was the same age that the accelerated end had been at the moment before entry; for example, if prior to entering the wormhole the observer noted that a clock at the accelerated end read a date of 2007 while a clock at the stationary end read 2012, then the observer would exit the stationary end when its clock also read 2007, a trip backwards in time as seen by other observers outside. One significant limitation of such a time machine is that it is only possible to go as far back in time as the initial creation of the machine;[20] in essence, it is more of a path through time than it is a device that itself moves through time, and it would not allow the technology itself to be moved backwards in time. This could provide an alternative explanation for Hawking's observation: a time machine will be built someday, but has not yet been built, so the tourists from the future cannot reach this far back in time.

According to current theories on the nature of wormholes, construction of a traversable wormhole would require the existence of a substance with negative energy (often referred to as "exotic matter") . More technically, the wormhole spacetime requires a distribution of energy that violates various energy conditions, such as the null energy condition along with the weak, strong, and dominant energy conditions.[21] However, it is known that quantum effects can lead to small measurable violations of the null energy condition,[21] and many physicists believe that the required negative energy may actually be possible due to the Casimir effect in quantum physics.[22] Although early calculations suggested a very large amount of negative energy would be required, later calculations showed that the amount of negative energy can be made arbitrarily small.[23]
uncertain.
Re: Time is thought of incorrectly !!!
[info]thomasbaird wrote:
Thursday, 28 May 2009 at 04:02 am (UTC)
Here is a reply more to your question.Have you heard of "Nostradamus"?Nostradamus had a special gift from God to have visions to be able to see futre events that were going to happen in thr future from where He was at.He even saw to our time and beyond.Seems to me its like Nostradamus had a time machine and could travel through time and He recorded events in different times and went back to his present and wrote them down and as the time arrived it usually happened unless those who new of his predictions did something to prevent them from happening and in doing so He never saw them happen in the first place and so the never happened so He never saw them in his visions.Do you understand how it works yet?You notice Nostradamus didnt go back in time and change things he was movoing forward in time from his present and seeing the future events to come.So it shows if you act on his info you can make changes of future events.Seems to me the future from my present is always subject to change by a variety of reasons.We all make decisions every day that affect and change future events as we move forward through time.The present we are in is the results form our decisions and acts from our pasts.For us to travel back through time from our present and arrive to whoever saw us would be seeing someone from there future even though its our past.Do you understand yet.So who ever goes back through time needs to be careful not to make any changes unless authorized.If changes are made the time from where they came from will be altered when they retun to the altered present.Depends on what changes they made.If they dont make any changes then the time line should be the smae one they return to when they go back to there present time.Keep in mind the amount of time you have been gone must be factored in so you arrive back in the present normal time.If you get back too soon you might see yourself before you left.So record how long you have been gone and arrive back some time after you left.Then some will say where have you been havnt seen you for a few days or so.But if you are gone 5 years youll want to arrive back at present time 5 years from your departure time you will have aged 5 years, to be in your actual normal present time.Do you understand?You will age by the amount of time you have been gone from your present time.Must have three time clocks that are working the present time clock.the past to where you want to go or are atand the future time to where you want to go and are at in the future.Like the three clocks Doc Brown used in Back to the Future .
Time Travel and Religion
Prophecy and theology

It is interesting to note that any religion which postulates the existence of fulfilled prophecy requires, at the very least, an agent which can move information from the future into the past.

In Christian theology, for example, God is assumed to exist unbound by space or time. Doctrinally, God is held to be omniscient and omnipresent. Statements in the Bible such as Jesus's claim "before Abraham was born, I am" (John 8:58) and Peter's claim "[Jesus] was chosen before the creation of the world" (1 Peter 1:20) (assuming the creation of the world began at t = 0) imply that God does not occupy the same timeline that we do. This is further supported by the assertion "I the LORD do not change" (Malachi 3:6), since change requires movement along, and constrained by, a temporal continuum.

Two popular interpretations of these statements are that God exists outside the space-time continuum; or exists at every point in space-time simultaneously. In either case, God can transfer information from one point in space-time to any other point without restriction.

Transcending time through ancient wisdom

The Yoga Sutras of Patanjali have been considered by some, such as physicist Fred Alan Wolf in his book, The Yoga of Time Travel to describe an inner process by which we can access knowledge of the past and future in the present. This form of time travel can be acquired by transcending the five Earthly anchors of the ego mind which otherwise leave us locked into the illusory self.


.
To Travel and or Communicate through Time
[info]thomasbaird wrote:
Wednesday, 27 May 2009 at 05:48 pm (UTC)
Lets say we have already created and have a time device available now.What do you want to do with it?If we physically go back or send messages back into the past and make any changes we would alter our present time line.And if we did the change we might not even know it occured. So what how can changes in the timeline be monitored so we can make necessay adjustments to make needed improvements without changeing our history to a great extent?God our Creator has the final say.The Creator of our 3D space time that we exisit in. Good Luck.
thomasbaird88@gmail.com
Re: To Travel and or Communicate through Time
[info]timetravel999 wrote:
Wednesday, 3 June 2009 at 01:48 pm (UTC)
I am from the future where we have discovered time travel into the future and the past is indeed possible! Yipee!
I offer you a hint on how it was achieved.
TO GO BACKWARDS YOU NEED TO THINK BACKWARDS!
Take Einstein's theory and reverse it!
By offering this clue I have made it possible for you to invent time travel allowing me to write this message.
A word of advice: Please whatever you do : DON'T KILL YOUR GRANDFATHER!
Re: To Travel and or Communicate through Time
[info]thomasbaird wrote:
Thursday, 4 June 2009 at 04:46 am (UTC)
Thats great,did you know if you change anything it the past you might change the time line your from.So if you go back and you never were what you were before you went back into the past.Note you need to return after you departed so you dont run into your self. Be careful Just try not to change anything and enjoy the tour through time.
Time travel isn't possible
[info]ziggypit wrote:
Wednesday, 24 June 2009 at 04:41 pm (UTC)
www.senseorscience.com pretty much covers it all for me. Scientists are obsessed with light.
Time travel is not something to be messed around with
[info]jinglesj wrote:
Thursday, 20 August 2009 at 12:02 pm (UTC)
The big picture on time travel is if it ever will be possible who would be foolish enough to use it?
Time travel would obviously be a horrible thing to use because of the outcomes that could result from it. One small thing you do could completely change our future.

For instance, If you traveled back in time and walked by a woman/man they could SLIGHTLY notice you and that thought of seeing you could lead them onto another thought about something else and that thought could dramatically change their perspective and opinion on something. They could dump their girlfriend/boyfriend because they compared you to them and lost some faith in what could actually be a marriage and kids. Their kids would never exist and 3 kids would have lets say 5 friends each. The life of their friends would be considerably changed from them not being there and in turn those friends have 5 friends and their friends are changed(do you see what i mean?). This chain would never end and in turn completely change the world.

Time travel is not a wise thing to use if its possible. Lets say 5000 years from now the human race has invented time travel. By that time maybe the human race has evolved and become more intelligent and realized that absolutely nobody could go back in time because it would threaten the entire existence of the race. This is why we haven't seen anyone from the future!!! They KNOW not to use time travel(if it is ever to be invented)!!!

Kevin Holmes
Average Joe :)
Re: Time travel is not something to be messed around with
[info]thomasbaird wrote:
Wednesday, 2 September 2009 at 03:57 am (UTC)
Most think of time travelersform the future that traveled through time to the past. What about time travel from the past to a future time that would be a present time that would be there future and some ones present.So they dont know the future from where you are in the present.But they will now know there future by traveling forward from there past.
time travel is impossible
[info]mindy4 wrote:
Saturday, 29 August 2009 at 03:55 am (UTC)
we cannot go back into the past because the past already went. we cannot go back into yesterday or last week or last month or last year. it doesnt make much sence at all. we all have to live for today (the present).
Time Travel
[info]1866losttime wrote:
Monday, 14 September 2009 at 03:05 am (UTC)
It is possible to go to past but for the future is another as we have to attend to all matter in the future. See going into the past here on earth is easyer to do since we have a place, time and all the elements of that point. Well it is like driving at 10mph and you can see everything in front of you, but if were to go faster than light everything is a blurr so you wouldn't know what was in front of you and crash into it. So the past makes it easy to achieve this so you will know where you will end up in the past without popping into a wall or in front of a car or into a person ect.... this is what time travel to past possible and to go to the future we would have to leave earth so we will not end up as bug spat on the windshield. If we do manage to go to the future then we can have all the refference points to the future from the point of our time of departure to the time that we have arrived at the future. this may sound stupid, but it is not as for wormholes and blackholes it is only to get to point A to point B not past or future, but get like from LA city Ca. to NY city NY. in a blick of an eye. This is where we bend time and space so we don't have to flie from one city to the other this is just where we just take a simple walk and we are thier. Time travel possible YES!! Just got to have simple commen sense to achieve it.
[info]southstar7 wrote:
Wednesday, 23 September 2009 at 05:46 pm (UTC)
well if we cant see and meet time travellers from the future in fear of messing up their future......what are ufo's???? i believe they are the time travellers
UP DATE: BREAKTHROUGH
[info]winston6446 wrote:
Saturday, 3 October 2009 at 03:54 pm (UTC)
DR. Deidra M Blevins at the US.DDT.State Center has made a receint breakthrough with the time travelas we know it! it will soon be on the news as we all may see!! the media is not suppose to leak this but it is gettting out fast!!! watch the clip for your self! wow.



http://www.youtube.com/watch?v=bSZryimnMuo
Travel into the future
[info]thomasbaird wrote:
Monday, 12 October 2009 at 02:17 am (UTC)
To see whats going on then travel back to the present from where you left.The you will know the future.
Re: Travel into the future
[info]thomasbaird wrote:
Wednesday, 21 October 2009 at 07:20 pm (UTC)
Good Bye I wont be back in this time
Travel accessories
[info]goingbacktobed wrote:
Thursday, 22 October 2009 at 10:23 am (UTC)
Time traveling
[info]sweetbriar12 wrote:
Wednesday, 4 November 2009 at 06:32 pm (UTC)
Mail a copy of The Times to another address.....and you have Time traveling

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