Is time travel possible

[Mike]

That seems to me like saying inches and meters don't exist because humans made them up. They just gave a name to an already existing concept. Time can, and has, been measured.

I think if we ever do figure out how to travel through time, it will only be possible to go back as far as when time travel was first made available.

Going into the future, however, seems pretty much limitless.

[dbroad]

Time while a human concept in terms of measurement has existed alongside the universe forever. Think about it all a meter is is a standard unit of distance the distance still exists it just isn't quantified in human terms. But as time must exist for science to work and time needs a universe to occur in then the laws of nature cease to ocur thus meaning energy isn't constant and that it doesn't need a source meaning a universe could occur as a big bang and be acceptable. In terms of wormholes they don't transverse time just distance meaning you could get to a point in a minute rather than a year as you only travel the distance of the wormhole not the distance between the terminus points. To move through time you'd need a 5d craft o do it considering we're 4d at most it is very unlikely unless we manage to mess up the universe.

[Bjorna]

Okey, the arkeologists in sweden have just discovered something remarcable which turns this discussion upside down.
they've found this:
[img=mini]http://www.vg.no/bilder/edrum/1182397853681_492.jpg[/img]
source <-- biggest norwegian newspaper.

Now doesn't that look like mickey mouse?
It was found under the 2000 year old city Uppåkra in Skåne in Sweden.

Now here's the deal, some say this is proof that time machines exsists, but some say that it was just supposed to be a lion, but was carved by a man who had not seen a lion.

So what do you say?

[cortjezter]

i'm sure any culture capable of time travel would have better ways of taking snapshots of their disneyworld vacation

i think it's merely a coincidence..people see what they want. the resemblance is not very strong if you ask me... two big ears and a nubby nose doesn't mean anything. could be any number of animals.

[Commie Mario]

personally I think if we ever time traveled, it would cause a dimensional rift splitting the world as we know it into two parrallel dimensions, one that was going on as the person time traveled, then a new one would be made where the person time traveled to, otherwise the person going though time would die...



or you just do it like they did in M&L PiT

[dbroad]

Time travel doesn't have to involve different dimensions or death. When something is chilled to absolute zero it ceases to experience time until it warms off absolute zero thus meaning it has time travelled into the future. A different dimension is only formed if a major event in the past is changed to such an extent that history itself can't be repaired. e instantaneous For all we know time travellers could exist in the past just to make sure that Universal history is constant and unchanged. Also wormholes don't always result in death after a set amount of energy has been passed through them the gravitational anomalies become non-fatal. The time frames involved mean that the compression and expansion are almost instantaneous and as such only fatal depending on the strength of the anomaly. But the bestway to time-travel is still the way I detailed in my earlier post.

[SirKent]

Anything and everything is possible, it's just that certain things are more plausible than others.

[cortjezter]

i just saw an interesting show on discovery channel last night that talked about time.. and had a bit about time travel. science can prove the physics behind time travel being possible.. even to the point that they have a rough blueprint for a machine. it's just that our current level of engineering has no way to actually produce such a machine and generate enough energy to power it.

[Piloteer]

i just saw an interesting show on discovery channel last night that talked about time..

Heh, I watched that too. Very interesting subject indeed.

Did anyone hear the story about the scientist who claimed to send music a fraction of a second into the past? I'm digging for the article...not sure how credible the claim is.

To answer the question the topic asks: I'm not sure that time travel exists, but I certainly think that it could be possible.

Just remember: People in the past have said that harnessing electricity was impossible; that "horseless carriges" (cars) were impossible; that these flying machines called airplanes were impossible. All accounts have been proven wrong. Now some are claiming that time travel is utterly impossible, which makes sense at this point in time (see what I did there? ), but if history has taught us anything, it's that this claim will be proven wrong once again.

[Bjorna]

So do anyone know where we who didn't watch the show can watch it?

[dbroad]

Time machines are extremely dangerous as they have to affect the whole body consistently, which is very difficult due to the number of different chemicals in our bodies. If it wasn't consistent parts would get left behind and it'd be very messy. Also they'd have to make a portable power station the size and weight of a bag of sugar so that you the power supply can come with the machine meaning you don't get stuck half way. If time achines are to be built it won't be until we have interstellar travel as by that point we shold have enough technological know how to cobble together a time machine that will just about function, till then only sub-atomic particles can play around in time.

[el_sean]

I don't really know about time traveling. I think it is possible, you just can't affect anything in the past. I've got two possibilities:

Option A: Let's take a hypothetical situation as an example: Subject A goes back in time and changes something that would affect the present. In order for this change to be permanent, this individual's alternate time line would also have to make that same change for the same reasons. Consequently, that person (from the alternate time line) would see no change because his role is actually preserving his "time line". If time travel really occurs and if it is possible to affect the past, then no "changes" can be made to it because we wouldn't know what we're changing.

Option B is simply that we can't go into the past and/or can't change the past.

[jab]

*sigh* this is irritating;



TIME IS AN IRRELIVENT FACTOR, TIME IS SOMETHING USED FOR MEASURING, NOTHING MORE..... jeez..

[NintendoWiiForever]

uh...thats not true(well time is a measurement)
we cannot prove it isn`t there...it could a force just as gravity is...

[Glitch]

I'd like to think it's possible, I like the idea of multiverses, I believe if we can increase our understanding of what time is and expand quantum theory we may find we can travel back to the past and alter our own futures, certainly not changing reality for everyone we exist with like in the movies but at least for the observer, the time traveller, he might be able to move into alternative futures from any point back in time, getting back home though, now that might be impossible...

[BlueLaser]

We travel through time constantly, at about one second per second foreward, of course. The next question is: can we speed up, slow down, or change direction (go backward in time)? Tests involving satelites have shown that an object DOES speed up or slow down in time depending on how fast it moves, or at least that the time that atomic clocks measures can change with speed.
Think back to the future, with dock sending einnstein (or whatever the dog's name was) to the future and seeing two different times on the clock after synchronizing the beforehand. Except, in real life, a sattelite leaves the earth and goes thousands of feet per second after being exactly synchronized with a statioary clock on earth. and the diference when the clocks are reunited is 0.00000000027 seconds. Still that's pretty amazing to me.
How do people know this? It was part of Einstein's theory of relativity, and it was proven when people started making GPS satellites. Without adding the extra extreme percision in alligning GPS sattelites, your Tom-Tom 's directions would be a block or two off. Yay Science!

[t27duck]

Is time travel possible?

Just click this link and you'll have your answer.
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[sharkh20]

I feel it possible to move forward in time, but not backwards. If it were possible, we would have seen somebody from the future by now. I do not believe in more than one dimension of time. Now i guess there is the possibility that something can move back in time and it would change everything to the point where everything in my past is just constantly changing but I would not notice because I would fully believe that my past has stayed the same. But I doubt that very much.

[Creedy316]

just read X-Men Days of Future Past, lol.

or watch Quantum Leap.

both the theories make alot of sense.

[alainmeyer1]

If time travel was ever going to be possible, then the history books would be filled with passages about how time travelers went back and spread technology out all over the ages.

So no. Time travel will never be possible, ever.

I would say that, and I voted not possible.

However, it is possible that if you were to time travel you're brought into an alternate... world if you will.

[Creedy316]

time travel into the FUTURE could hold some stability there, but travelling into the past and changing events, is either just impossible, or creates an alternate timeline that we know nothing of because we're rooted into our own time line.

but then again that would mean there could be dozens of different timelines which just seems way too science fiction to actually be real...

[SteveC1990]

i dont think it is possible, especially into the past i just cant see how it would be possible! surely we would have met a time traveller or something that would give us a clue!

[PikminFan7]

all you have to do is go to a planet that's rotation is slower than it is here; and stay there for like a year and when you come back it will be way in the future.

[LordTyroxx]

all you have to do is go to a planet that's rotation is slower than it is here; and stay there for like a year and when you come back it will be way in the future.

That makes no sense at all. If anything, the days (or revolutions) another planet has doesn't effect the earth's rotation.

I will try to use an example.

You go to another planet. (given)
It's rotation is slower. (given)

It is the same principal as having a wrist watch that is slower than everyone else's wrist watches. Time is passing regularly, you just see it differently. Nothing is time traveling.

Or as my friend says, "Time travel is as easy as turning the hands on the clock:"

Time is man made.

[PikminFan7]

all you have to do is go to a planet that's rotation is slower than it is here; and stay there for like a year and when you come back it will be way in the future.

That makes no sense at all. If anything, the days (or revolutions) another planet has doesn't effect the earth's rotation.

I will try to use an example.

You go to another planet. (given)
It's rotation is slower. (given)

It is the same principal as having a wrist watch that is slower than everyone else's wrist watches. Time is passing regularly, you just see it differently. Nothing is time traveling.

Or as my friend says, "Time travel is as easy as turning the hands on the clock:"

Time is man made.

what i ment was that if you go to pluto or something and stay there until the end of 2008; and you come back and you think it's 2009; and it's really 2015 or something and you will only be one year older. i think that will make more cents.