Wormholes and time travel

According to Einstein (the leading expert as of right now id say) Time travel is not possible. The interesting thing Einstein said was possible was that it might be possible
to look back or forward in time.
I have yet to see any definitive answers other than what einstein wrote and if
their are any studies out there that are published i would love to hear bout them
 
I think the thing to remember with timetravel is that we are not living in the present, we are living in someone else's future. That is to say that no-one, for example, has ever destroyed Sydney with an atomic device. Therefor, in our universe atleast, no-one could ever go back and destroy Sydney with an atomic device, because we'd know about it. I'm of the mind that if there are timetravellers, then they're inconspicuous or in the deep past, and all the changes and paradoxes and such that we talk about have happened. Timetravellers probably have had a direct influence on the past and present, but it all fits into our perception of the course of histriy. Some people will say that this is a belief in predetermined destinies, but it's not. It's just realising that, logically, we exist and our past exists and so, relative to anyone from our future or present going back in time, they will not be able to change anything because it already happened and they know about it.

I probably misexplained myself, but that's my opinion.
 
Time travel happens. We are contantly travelling into the future at the speed of one second per second. Einstein evnisaged travel into the future at lightspeed. Kip Thorne has shown how a 'tame wormhole' could be used as a secure portal permitting two-way time travel between two distinct points in space and time.


Time travel back to our past, however, is something that even now seems to have no theoretical basis. A good overview of current theories and speculation can be found in Paul Davies' How To Build A Time Machine.
 
any one intrested in time travel should look up 9dimensional theory on the internet or maybe they should watch the bill and ted movies.. ha if time travell is ever goin to be possible they are already here maybe they are being kept locked up maybe they are hiding but in the end how can they keep it from people some one must find out eventually but they would probably be locked up too if you ever saw the movie k-pax thats how it would be for a time traveller also nobody would believ them so how are we supposed to know if they are telling the truth if the truth is impossible. and if people can time travel in the future they can do it now because the time travellers would build a time machine in the now ..ok cya
 
due to the theory that time travel creates parallel universes for every decision that was ever made, once you have passed the event horizon and travelled back through time a new time paradox is created, subsequently forming a new universe, once there a time machine would not send you back to your plane of existence, for that you would need a controlled quantum singularity generator. This in theory would allow you to return to your own dimension.
 
The only theory, I know of, that could be called timetravel and is known by now is based on the theory of relativity.

Time is relative and goes slower if you move. There are experiments with particle accerleraters which confirmed that. It is possible to prove it theoretical, too.

=> it might be possible travel foreward in time by moving almost at the speed of light. The person moving inside the moving container would experience time. But it would run slower than outside.

The problem is that it would be impossible to travel back.
 
gravity affects relative time as does speed, there are also quite a few theories that state that, relative time tavel backwards must be possible... of course those same mathimatics indicate that we are almost definately not real or atleast not the starting point of life: aka gregory benford's cosm. We simply know to little, today
 
I am unsure as to whether time travel is possible but potentially at least I like to think it is. Purely speculating based on our current understanding that time is just a dimension, we can travel backwards and forwards in the x,y,z directions (spatial dimensions) then why not in time as well? Perhaps time is different to the spatial dimensions but so far time seems to interact with them in things like mathematical or scientific equations so perhaps not. I suppose it all depends on exactly what would be classed as time travel

My views on the multiverse have changed a little after recently watched some programs on creation of the universe etc... In that I never gave this idea any credability but now I think there is maybe just maybe a chance of these mutliverses existing. However, if they do I have no hope that it would be possible to travel between the multiverses.
 
And there's me complaining about the use of "multiverse" to explain that the universe (all the matter and space that exists, by definition) has a few more dimensions and a bit more matter than previously considered. here I get landed with "multiverses" Arrg!

A straight forward four dimentional universe does not disallow time travel, but it is static: everything that will be done, has been done or is being done is fixed. The ultimate in predestination, no problem of paradoxes and pretty boring for stories. It would allow filming the crusades of solving murder mysteries bu not much else.

The "time scan" facility which would allow information (but not matter or energy- that'd contradict conservation laws) to come forward along the entropy arrow- not much more use. Running it backwards is disturbing- if the moment you get your time machine running there's a note in it from yourself telling you how to build it better, which horse to back and tomorrows weather, that's saved us a lot of trial and error.

Add a dimension or two and you can travel into the past. Unfortunately you can never come home again, as your appearance has either changed the universe into one in which several kilos of mass suddenly appeared fom nowhere, or splits off an alternate, running parallel, which steadily diverges from previous history. Somehow takes some of the point out of it.

Of course, we hit some other slight problems- if we travel from the surface of a planet, when we arrive, the planet's not there. Or, if by some freak of orbital dynamics it happens to be, it's not moving at the same speed. It would be much wiser doing it in a spacecraft, and finding the planet later (probably what all those UFOs are) H.G.Wells put his machine in fast forward rather than hop mode, so its weight and friction stopped it from detaching itself from the surface of the planet, probably very wise, but he was lucky that the surface of the planet stayed at the same level- rare over such periods- so embarassing to find oneself buried under five meters of rock, or twenty meters above the surface of the sea.

Philosophers tell us we can never go home, and if time travel were to be invented I'm surethere would be students willing tu come back to a very slightly changed reality in exchange for the knowledge gained, paying enormous attention to make minimal changes so they can still operate their word processors when they got back. And, sooner or later there'd be someone who'd decide the world could only be better if Hitler were assasinated in 1936, (and WW2 would start eight years later and everyone would have atomic weapons) and the a time traveller from that sequence would come back and change everything, and history would go on a wild roller coaster ride until, on one cycle, no-one invents the time machine, ever, and that one's stable, so here we are in it and I'm travelling into the future at sixty seconds per minute, thank you very much.
 
TIME TRAVELING AT 60 WORKS PER MINUTE WILL BE OUT LIMIT

famous quote, not sure who it was by, but I don't think it would be wise to travel backwards in time for all the reasons just mentioned. I watched the simpsons halloween special, the one with the time traveling toaster.It was pretty stupid, but fun none the less and reminded me about the key issuse.
Why would you want to change the past? Why would you want to forget or negate all the things that our past has taught us? Even if bliss would be possible, would you ever be happy with bliss for ever?
 
dreamwalker said:
TIME TRAVELING AT 60 WORKS PER MINUTE WILL BE OUT LIMIT

famous quote, not sure who it was by, but I don't think it would be wise to travel backwards in time for all the reasons just mentioned. I watched the simpsons halloween special, the one with the time traveling toaster.It was pretty stupid, but fun none the less and reminded me about the key issuse.
Why would you want to change the past? Why would you want to forget or negate all the things that our past has taught us? Even if bliss would be possible, would you ever be happy with bliss for ever?
Click to expand...
Perhaps ¿Baxter ,wasn't it? Timescape? message from the future saying "when you are going to have started this power station it will have produced black holes which are going to be eating the planet that I'm standing on and you're going to would and here's the mathematics to prove it so perhaps it would be a good idea not to particularly since you're going to be me if you do" or Varley's "air raid" where the travellers came from a time so desperate that they consider the dissolution of the universe preferable- everybody has his break point, I merely don't know where mine is.
 
firstly, I think its possible, I think backwards to memories of loved ones all the time, but to actually go there is conceptual. If you did you would almost certainly alter something that would destroy the foundation that made your own time line viable, and so you would go out with a quick Ker-pop. What if time does not exist at all in the first place? you measure the minutes by the clock on the wall, but nothing evidentual eludes to the existance of time that can be travelled through like some cosmic stew. I think it comes down to atomic structure, we see time because matter decays. new structures become old, still nothing visible as "time" And arnt we time travellers ourselves anyway? At least forward, whatever direction that is in time.
As to whether I would want to change the past? Yes, she did not deserve to be pre-empted by a psychotic gunman, and I feel like it should have been me that passed, and as far as destiny? Nope. I just cant beleive I am the completely miraculous invention of a cookie cutter. So I have the power to choose my fate, as many times a day as I like and that is power, the power to choose my own destiny.
 
Hi there,

I stumbled accross this forum and had to join as I found your writings very interesting. As a professor I have to ask you to ask yourself if you are a fantasist or a realist? - And then to further ponder space, time and quantum physics. (It is all about susceptibility and whether your brain can actually comprehend what you are about to learn - Einstein was good at this).

I can tell you that time travel is only possible from a theoretical point of view and always will be. You cannot go back in time or forward into the future.

Time is what is real to our world and to its people as a measurement. The fact that atomic clocks which fly around the world on planes and have a different reading to ones set at precisely the exact time, but which were left on solid ground should prompt you to think about which clock is really right!

I believe that as you have expressed an interest in the subject, then another area which is sure to fascinate you would be:

Particle accelleration and the artificial creation of black holes (already done in Geneva by scientists!)

Keep up the good work chaps!

I thank you

Prof. Alessandro J Rabar
(Manchester)
 
Hi,

Do you really think that time travel is possible? Firstly, forget the TV programs of the 80's and stop trying to hold on to the notion that you could have stopped your old dog from dying or have prevented splitting up from your partner back in 1996!

This should really get you going...

Black holes have a gravity so strong they can suck in light itself.

Then, If you were to enter a black hole - which should throw you out at some random, undefined place somewhere else - what would be the opposite of a black hole?

A white hole which spat you out at speeds which would destroy you just as the black hole did?!?

Space is no different than my toaster - the front is the opposite to the back!

If I shone a laser into a black hole would I indeed blind some poor alien in another place in another time?

Q) What is behind a black hole? The answer...

A) The back of a black hole.

I thank you.

Prof. Alessandro J Rabar
Manchester (UK)
 
If history teaches us anything, isn't it that we always have more to learn and the more we know, the more we understand that we don't? That, Professor is the beauty of Science Fiction and Fantasy. Although we do appreceate the hard facts even though for the purpose of this forum, we'll assume they are a little soft.

By the way, Greetings and Felicitations.
 
Umm... I believe that time travel is possible it is just that as far as the general public knows we don't have it yet but anything is possible and I do mean anything. All history and science has taught us is that it can and probably will be rewritten many times in the future and as was pointed out above the more that we know and discover the more we will realize that we don't know anything.
 
I think that if time travel were possible it would only be into the past, and even then you would only be able to observe events but not interfere with them. If this were true then future generations could be observing our time period and even futher back and we would be completely unaware!
 
I have to disagree. I don't believe time travel to the past will ever be possible.

My reasoning is just logical, not based on the practicality of it. If it ever were to become possible, then time-tourists would travel back in time to observe past events. Just as certain geographical places become tourist traps, certain time periods and events would become time-tourist traps. Now, think of an event in the past that you would like to visit yourself. Does history record a huge number of spectators who suddenly turned up just before it happened?
 
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