Time travel will never be possible.

[Zero-Vash]

There is also the explanation the book Timeline gives. We wouldn't go back in time so much as travel to another reality or dimension that is of a time in our past.

Also I can do this thing where I meditate, and when I break out of my trance I have moved forward several hours forward, sometimes even into the next day O_O

 

[Blanks]

Don't worry, i'm working on it

 

[meone007]

the only way I see it as possible is if a person could witness past and future, but not interact with it. that way nothing can be distorted. However, traveling into the future creates another conundrum, as in, if you witness the future, can it be changed? And if so, shouldn't those changes be present when you visited in the first place?

 

[EricKINGS]

If it were possible dontcha think someone from the future would have already gone to the past and we would already know it?

Im pretty sure time travel is more impossible than it sounds.

I mean seriously, when have u ever seen anything even remotely close to TIME TRAVEL?...
freeze pods if i had to say, and does just let time slip by not to mention they only let u go to the future.

 

[Altorin]

I'm travel is already possible

Sitting at your computer, you are hurtling towards the future at the speed of light

 

[Berethond]

No.
It would be impossible to change history, as it has already happened.
It fits together like a jagsaw puzzle, it all just works out.
(Cookies for reference [it's rather odd])

 

[Coldsnap]

If it were possible dontcha think someone from the future would have already gone to the past and we would already know it?

If someone told you they were from the future, would you believe them?

 

[EricKINGS]

If it were possible dontcha think someone from the future would have already gone to the past and we would already know it?

If someone told you they were from the future, would you believe them?

Probably not, however, if they truly were from the future, they should and would probably have some proof.

 

[cleverlymadeup]

I just want to make sure I have this experiment right then. According to Einstein the speed on light is a constant. So if you bounce light off of two mirrors that are directly above each other it takes the light light x amount of time. Then we do this in a moving environment, to the person in the car the light is still going up and down but to the outside world it is actually moving in a triangle shape. But because the speed of light is constant it takes more time to travel this larger distance then the smaller up and down distance. Proving that time is relevant to the environment.

Sorry it took a while to reply I had to dig out my physics book. Example was taken from Pg1118 of "Physics for scientists and engineers"

The best example of is that scientists have taken two clocks which were amazingly accurate, electronic clocks that can measure accurately to some huge power over like a year.

They took one, put it in a hugely fast plane and flew it around the world, the other one they left back in base.

When the clock that was flown around the world came back, it was a second behind the other clock.

There, human's have caused some form of time fluctuation, or at least some form of "de-syncing" time.

I'm surprised that you haven't mentioned yet that, yes, people's perception of your time slows when you travel faster, and exponentially gets slower when you approach the speed of light, but a continuation of that is that if you draw a curve with that knowledge in mind, you get a point where time stops at the speed of light. (which theoretically you can't reach unless you are massless).

But if you could go faster than the speed of light, following the trend of the curve you would be travelling backwards in time.
Following one of the postulates of relativity is that everything should work the same way in every inertial frame, so theoretically it would be possible for things to occur in reverse.

But then quantum theory I >think< disproves all that, but then Quantum entanglement may show that somehow particles react to each other faster than the speed of light. (Although that's still heavily in debate). Which would give you the impression that things can travel faster than the speed of light.

I'm a little sketchy on this theory. (I'm an engineer)
I thought that the speed of light was in theory the fastest you could travel?

But yah I have not heard of the de-syncing experiment. Sounds interesting.

i totally forgot about that experiment with the planes, it was actually 2 atomic clocks they did it with.

the issue with quantum mechanics and theory of relativity is they are in conflict. quantum mechanics works fine for small things and the theory of relativity works fine for big things but the 2 are in conflict. they are trying to unify the 2 with the theory of everything

as for time dilation and such read this, it even mentions the experiment with the clocks

http://en.wikipedia.org/wiki/Time_dilation

 

[UsefulPlayer 1]

Oh it will be possible at one point, and than someone will use it to fuck up the space-time continuim.

Or have they already done it and this is the out come?

I mean it was done in the past.

That's why I don't sweat these things. Nothing can happen that didn't already happen.

 

[Gamer137]

If time travel ever did happen, we would not know it. Hence it never happened because we think it is the same and unaltered.

 

[slopeslider]

Hey guys.
In order to go back in time we'd have to go faster than light. But if we had an engine that used light to propell it, it would only be going ALMOST as fast as light. because nothing is faster than light, nothing can propel you faster than it. [hypothetics]At BEST we'd have a 'time reduction' machine that sent you into a pre-established flight orbit in space, slowly speeding you up as to not kill you with excessive g's, then keeping you at near-light speed, where you will almost not age, then slowly slowing down to bring you back. 500 years later you'd be 3 months older or something,and medical tech in 2700 will have increased to be able to cure you of your previously uncurable in the year 2200 deadly brain cancer, the reason you dd this.[/hypothetics]
If time travel WAS posible, what would happen to the person?
Matter doesn't leave he universe, it just changes form.
what happens to the space that the time machine was occupying? is it empty?
the future cat be chaned,it has to happen first, and once it happens it's ALSO part of history that you went back to change it, but if you changed it it never happened so you have no reason to go back.
Also, how is a new paralell (I'm sure I spelled that wrong)universe going to occur? You went back to the same universe as the one you came from. if you change something your changing your same current universe. And if that old on you came from branches off, then the question remains what became of your mass that went back in time?
haha maybe time travel has already happened (if it was possible) and they screwed up so bad they went back in time and mae sure we couldn't make time machines!
Thats why I dont think backwards time travel is possible, just decellerated forwards time travel. but im not a science major so feel free to berate me to your hearts content, just make sure you quote me so I get the alert message.
(I cant back this up with scientific quotes or anything so dont take it TOO deeply k?
and post ight be a bit sloppy, but you can see I've got a bit of a head on my shoulders)

 

[Deadpoolsbrain]

I think if someone messed with time it already happened because it was meant to happen. No new timeline no new messups.

Man that is a brilliant point. Intentional alteration of time to where no time travel is ever invented.

Kindof the Futurama position, Fry went back in time and did the dirty with his grandma but nothing was changed because in the past it had to happen for his father, then him to come into existance.

 

[SilentHunter7]

According to Einstein, time travel could eventually be possible, but you can only go into the future.

 

[Scrythe]

What we perceive as "time" is actually just the illusion cast by the patterns of life, death and decay, combined with the collective memories of our experiences. Jumping into some kind of machine that could let you relive your past moments would be the closest thing fathomable to time travel.

And the only reason why we have a system of time is because we, as a species, have a hardon for measuring everything.

 

[Berethond]

I'm a little sketchy on this theory. (I'm an engineer)
I thought that the speed of light was in theory the fastest you could travel?

But yah I have not heard of the de-syncing experiment. Sounds interesting.

oh no no no, you can go faster than light.

Einstein specified that you cannot accelerate to faster than light.
So you have to get there without accelerating. Which is, for now, impossible.

Until someone invents something that skirts this little problem.

 

[theklng]

there's a russian astronaut who's technically living nearly a second in the future due to having spent his life mostly travel at fast velocities. relativity theory at work.

this may also be of interest: http://en.wikipedia.org/wiki/Tachyon

 

[DeathsAmbassador]

I think it will be possible eventually but that it will be impossible to change the past. You can try, but everything's already happened, which means that you would have already tried to change it, so no matter what you do it will have already happened so you will only made the past come true. At least that's what I think, and I'm really bad at explaining it.