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If the future has not happened yet, and it seems highly unlikely that the past is stored anywhere, how can time travel even be theorised?

Think about it, the only thing that exists is the present moment, time is only there because man records it. Mankind probably just has a need to take full control over the universe, we can travel space, but not time and that frustrates the control freaks.

2007-08-18 11:13:48 · 18 answers · asked by Anonymous in Science & Mathematics Astronomy & Space

18 answers

good man danny your on my wavelength.
Science gives you dimension and all that garbish simple reason is cause they dont know themselfs.
so they make up all these exotic places called dimensions that solves the problem cause they aint smart enought to answer the truth..put it this way your guess is as good as theirs even with all their degrees..so keep thinkin it out you may just one day solve it....

2007-08-19 17:25:29 · answer #1 · answered by Anonymous · 0 0

If time travel is possible then the people who have or will do it are the only ones who can in our time line. The rational for this goes as follows. The mere presence of a traveler in time in the past changes the universe they visit (mass balance, gravitational distortion etc) but since they have traveled in time that change had always taken place as far as the time line is concerned. Had the change not taken place in their present then the had not traveled back in time. The same is true for traveling forward. After they have left their present their absence changes the universe.

The usual blurb is there is nothing in physics to prevent the movement through time just as we can through the other dimensions. But as some others have said, there is growing evidence that time isn't real. As those who "keep" accurate time on atomic clocks and they'll tell you they don't, they only keep recording a succession of events.

2007-08-18 19:17:58 · answer #2 · answered by zebbedee 4 · 0 0

Time travel is possible. Currently it isn't survivable, but if you are operating in the area around a black hole rotating around a point then the space time frame is stressed so much at that point that you can travel back in time up to the point where the black hole existed.

See my answers listed here: http://answers.yahoo.com/question/index;_ylt=Anxa9TP2Bp0_gXbUCO_yzvDty6IX?qid=20070817200102AAWbqnY&show=7#profile-info-ZGEsWJFtaa (the 4th question). A lot of people have been asking this question lately.

The problem is getting through the stressed area of space time without being converted into a tiny stream of particles and then to get back.

There is one theory that states all possible actions exist in alternate universes. So there is a universe where Hitler won WW2 and where you were never born. If you try to travel back to the present after time travel then which alternate track would you take? If you changed something in the past, even something s minor as killing a butterfly, then you could change your current time line so that you can’t find it.

Or time travel could be impossible because the laws of physics and the nature of the universe won’t allow it. This is my personal favorite theory. If you go back in time and try to change history then either you will die in the process, or you won’t be able change history; itself may conspire to prevent the change from happening. Or just trying to travel back into time would take you off the current time track and switch you to a random one with return impossible among an infinite number of possible time lines to return to.

I have never liked time travel stories. I think the universe and the laws of nature would conspire to prevent the paradoxes from happening. We don’t observe any paradoxes in the universe for a good reason, they go against the laws of physics as we understand them. So while physics says time travel is possible, I don’t think that it will be.

2007-08-18 18:52:07 · answer #3 · answered by Dan S 7 · 1 0

theoretically, time travel is possible......but only to the past. Nothing can go faster than the speed of light, therefor nothing can theoretically travel to the future, because you would have to travel faster than light. Maybe in wormholes you could travel to the future or the past, but I do not know. There is a man who setup a laser thingamaging that somehow can capture future broadcasts if you will....not matter but messages. In the future people can put in messages that can be inferred at a different time in the past, so once he turned it on, he could theoretically hear something from the future by people using it then, but it could not go before he turned it on. I do not know where you would go to learn about this laser thing, since I saw it on tv about a year ago, but it does exist. Hope this helps.

2007-08-18 18:33:22 · answer #4 · answered by john r 2 · 0 0

Dimensions ,up down, right left ,backwards forwards, there is three. The fourth time ? Supose we could travel back forward in time,what would we hit in our path ? At the speed we would need to travel be alot of mess if we even hit dust particle.Now say a mountain was in the place we set of from a thousand years ago or even thousand year into the future. Allways mind Time alters space.

2007-08-19 16:39:40 · answer #5 · answered by marco f 2 · 0 0

It has been proven to be possible theoretically,,,but it also said that because nobody has come back from the future to tell us it is possible it therefore probably isn`t,,
It is also thought that this may not be the case as it may be possible to time travel and remotely view,,rather like watching a replay on TV
Only time and experimentation will provide the answers
Time is thought to be concave and stacked,rather like an arch way or circular form of stacked time,crossing the stacking could be possible but as I have said only viewed remotely

2007-08-18 18:22:48 · answer #6 · answered by McCanns are guilty 7 · 0 0

i reckon it would be possible to go back in time but it may not be the same as what happened in the past acccording to uus as the theory of infinite dimensions where all possible scenarios happen such as the affects of certain decisions. so it would not be possible to change what has happened but only view a scenario of what could have happened under certain circumstances.

as far as traveling into the future the same would apply as we could easily make up theoretically what will happen in the future by making scenarios and sayin if this happens it could lead to such and such. sotravelling into the future would seem more possible this way as we couuld predict the scenario already.

2007-08-18 19:07:08 · answer #7 · answered by stephenh1 1 · 0 0

If you have a sphere, it's round in all three dimensions... right.
Now, if you take a two-dimensional slice of the sphere, It's round, in two dimensions. But it's only a two-dimensional view of the three-dimensional object. Depending where in that three-dimensional object you take the two-dimensional slice you get a round two-dimensional view of varying size of that object.

Just as the two-dimensional view of the three-dimensional sphere is a slice of the sphere, the three-dimensional "reality" you see, is a three-dimensional slice of a four-dimensional object.

For us, in three-dimensions, contemplating... even imagining such a 4-D "thing" is hard... maybe even impossible. We're familiar with a 3-D number space with the x, y, and z axes at right angles to each other. But it's hard to imagine a 4-D number space with w, x, y, and z axes all perpendicular to each other because we can't visualize that 4th direction.

You said the past is not likely stored anywhere. You are correct, past, present, future are names we give to the specific view of that 4-D thing about which we're talking. Is it infinite? Is our current view the latest view available? Or do we kind of walk along it taking 3-D slice/looks at it from instant to instant?

If we are just walking along a path looking at the scenery, but the path goes on for ever, then that smacks of predestination. The future is fixed, and nothing we can do, can change it. But suppose there are branches along this 4-D thing.. and we can pick and choose which branch we might take, or perhaps the branches we are able to take are limited to the decisions we make and the past we create.

Traveling around in that 4th dimension will be fraught with paradoxes. The classic is that you go back in time and somehow prevent your parents from meeting. That would preclude your existence in the reality you left. Can you go back to that reality? What will happen if you do? Do you cease to exist at that moment? Suppose you go into the future and find information that, when you take it back with you, that it precludes the future you visited. Therefore the information you brought back would be wrong--could it then change the future?

Example: What would happen if you went back to 1935, looked up Hitler, and killed him. Would World War II have just been the U.S. and Japan? Without the German scientists who escaped to the US, could we have developed the atomic bomb? Without that, would Japan have eventually defeated us?

Or is everything already in place such that it can't be changed. Was Hitler already in power at some future point in 1935? Was the doom of the Third Reich a foregone conclusion waiting for the players to play their parts? If that were the case what would have happened had you try to kill Hitler in 1935? Would you be unsuccessful for some reason, in spite of your best efforts and planning?

Or how about this... suppose we can only exist physically in our own slice of this 4-D object. Perhaps, when we travel around... if we were able to do so... we could only observe from the vantage point of that 4th dimension in which we're traveling. Perhaps, the only people with whom we can interact are those in our time-slice or who are in the 4-th dimension with us.

Or, how about this... a point has zero dimensions. A line has one dimension. There are infinite points on a line. a plane has two dimensions. There are infinite lines in a plane. In 3-space there are infinite planes. By extension, might there be infinite 3-D spaces in 4 dimensions? Perhaps there's a mathematical "function" that describes travel through the dimensions. Change any of the parameters in the function, and you can have one place in 3-space to which you can go.

Anyway... enough of this mind-wandering.

2007-08-18 19:52:59 · answer #8 · answered by gugliamo00 7 · 1 1

Assume you are actually living in the past. Some sort of parallel world, that actually has happened, and finished.

You're here living out a life in a world that doesn't exist anymore.

Theorise the fact that you actually live, but may have been dead forever.

Then assume that this theory is wrong, and make the very best of your life. While you still have it.

2007-08-18 18:40:22 · answer #9 · answered by wonkyfella 5 · 0 1

time travel is not possible. i believe einstein prove that its impossible, but time viewing certainly is according to him.

addition: it has nothing to do with revolting around the earth. and u cant travel into the future even if it was possible because it hasnt happened yet.

2007-08-18 18:19:52 · answer #10 · answered by Anonymous · 0 0

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