is time travel possible?

in my opinion yes, me and my friends are convince that traveling through worm holes(i don't think will kill you) and black holes(which would kill you) will send you back into time, we have also soncluded that it would be impossible to travel forwards in time.

the theory that is the basis for this conclusion is: "time slows down when speeds close the speed of light are reached, and when the speed of light is reached time theoretically stops." and our conclusion is that when traveling in excess of the speed of light time will turn backwards.

it would be impossible to calculate how far back in time you would travel when traveling at certain speeds though. i do not believe we will ever travel back in time though.

How do you plan on going faster than the speed of light?

well, i guess when we reach the speed of light we will have to go with NOS.

look i just said that it is theoretically possible, not probable.

and maybe you should read the post again, worm holes and black holes theoretically can make you go faster than the speed of light

I don't think that time travel will ever be possible

No because travelling faster than the speed of light is not possible. Even if it were, it wouldn't matter, because past time does not exist and neither does future time.

Another thing: How does time stop at the speed of light? That does not make any sense. The speed of light is a measurable number, expressed as a function of time. If time stopped, the function of time would be zero, and thus the speed of light would be zero. So light waves are not a function of time?? I think they are.

To accelerate faster than the speed of light, one would need an infinite amount of energy, and your mass would also become infinite. So.. that's out of the question. Wormholes, in theory, only solve the problem of covering distance faster than light can by cheating the system... bending space so to speak.

Time travel is only possible on paper.

you got it steel

that is why i said it was probable, and if i didn't i should have, but my homes on my other forum have concluded that it isn't.

there is a really smart astrophysisist major over there at ECA. anyways theoretically black holes and worm holes would not put you over the speed of light, and we went into a big arguement about einstien theory and all that shit.

Light travels at 700 million mph, and if anything were to go any faster than that, it would be visible before it existed. Plus, if time travel was possible, wouldn't we be hearing reports of people appearing from the future out of thin air?

this is where being a trek nerd comes in handy...

if time travel is possible, it would only be possible to travel back in time, not the future. obviously, because the future has not happened yet, and tring to someplace that doesn't exist, well, let's just say it fucks you up :iceslolan ...however, many scientists have speculated that there are alternate universes that exist...that take up the same space as our universe, but are in a different phase, butt whatever.

O man where is my uncle when I need him. He has the best explanation of why time travel is NOT possible. Technically....we travel through time everyday....second to second, minute to minute. Thats the only time travel that is possible. If I talk to my uncle anytime soon Ill write down his explanation and post it up.

Of course it's possible! However, I will not tell you. All I will say is it has something to do with mullets.

Not to mention: Time doesn't exist. It's just something we made up in our heads.

First of all, a man by the name of Ronald L. Mallett
Ph.D., Professor of Physics, is in the process of developing a time machine. This machine is not some super crazy space ship, but instead it is a small cylinder shaped object, which will be used to transport atoms back in time. Saw this on TLC, and theoretically speaking, it has been PROVEN, that time travel both behind and ahead time is possible, where travelling to the futures is actually easier...

Not to mention: Time doesn't exist. It's just something we made up in our heads.
That is true. There has always been and always will be a universe. It was never begotten, it always just was. Kinda hard to imagine it. :eek7: :biggrin:

Traveling into the future is posible. My teacher said something about moving faster tha light makes you age slower or something like that. If you we're in some "time travel tunnel" where you can go faster than light, you age slower...example: If you age half as slow as the rest of the world, 5 years bieng in the "tunnel" would mean the rest of the world has gone 10 years. If you were to age 1/10 as slowly, a year to you in the tunel is 10 years for the rest of the world. So, according to my teacher, you can travel into the future, as long as you let the 'future' happen first. I don't thikn you can travel back into time...what has happened before can't happen agian the same exact way.

But the future isnt definite.....how can you travel to something that isnt there? You cant...you can try...but you wont like the result.

But the future isnt definite.....how can you travel to something that isnt there? You cant...you can try...but you wont like the result.

Re-read what I said and use your brain a little more. The future is'nt definate, but you're not SKIPPING time, you're just making it travel slower for you which makes normal time flow seem FAATER. Agian, re-read what I said.

integra818, your teacher is wrong, nothing travels faster than light, there is no tunnel like that, hasn't been theorized yet. and that wouldn't be considered traveling through time, just slowing your ageing process, and if you were to travel faster than light it would not just slow down time, but reverse time, i think you mean traveling at close to the speed of light. einstien theorized that if one twin was put in a spaceship and driven around space at near the speed of light for 40 years, an the other twin was just on earth for 40 years that the twin in space would have aged like 37 years.

turns out i was wrong me and my buds at eca figured out it is immpossible to travel back in time.

however it is possible to travel forward in time, it is called time dilation and you expierience it daily, from the time you started reading this post to the time you finished it.

Re-read what I said and use your brain a little more. The future is'nt definate, but you're not SKIPPING time, you're just making it travel slower for you which makes normal time flow seem FAATER. Agian, re-read what I said.

I dont want to re-read it. I first read it when I had a couple beers in me, so of course I didnt use my brain at all.

There is a good website called "HowStuffWorks" Time travel and matter transfer [Star Trek] stuff has been done ,but only with atoms/molecules.Be warned,you can get interested for hours in this site.

Forgot to put this in my last post, but back in the 1800s or so they said trains could not go over 35mph because all the air would be sucked out and people would suffacate. Nothing is impossible

Forgot to put this in my last post, but back in the 1800s or so they said trains could not go over 35mph because all the air would be sucked out and people would suffacate. Nothing is impossible

yeah, but that was dumb people that didn't know shit about shit. The engineers and whatnot knew that trains could break 35 mph, they just needed a way to put the power to the wheels.

about your teacher theory...

its true!!!!!!;

but its not a real time travel, what we can do is to stop our "biological clock"; the higher speed we reach, the most "pause" we can put in our lifes. Its a thing that happens to astronauts and other hi-speed humas.

greetins

Astronauts will only experiance aobut a 2 second "time travel", so...

Time travel is a falsehood.If it were possible to travel back in time,the very prescence of 'people from the future' would alter history.What has gone before cannot be erased,altered or improved.
What has yet to come does not yet exist,unless there is an infinite platform of chronology already laid out and we are merely one group of people living on it.Is it possible for a parallel civilisation to be using this planet ,but at a different point in time?Rather unlikely,Ithink.

As we approach the speed of light, our mass increases infinitely, so we wouldn't be able to accelerate all the way to the speed of light. If we somehow managed to travel FTL (not using wormholes etc, let's call it "realspace") then in short distances we would arrive at our destination before we left. Over long distances that shouldn't be a problem. However, as you go faster, time dilates. Einstein theorised that if a ship left earth and travelled at relativistic speeds (near the speed of light) for say 3 years (what felt like 3 years to the ship's crew) several decades would pass on Earth, so when they returned they would be 3 years older, but everything else would be 75 years older or so. That could technically be classed as travelling into the future of sorts, but how would you get back? This concept was explored a little in Orson Scott Card's "Enders Game", where the Human fleets leave every few years heading towards an alien homeworld at relativistic speeds, but the newer ships would be faster so they all arrive at roughly the same time. The journey feels like a few months to the crew, but something like 20 or 30 years pass on Earth.

As for wormholes, they wouldn't literally make you travel faster than light, they would rip a hole in space-time. Say we view space-time as a piece of paper folded over, like into a U shape. Mark a point on either side, point A and B. To travel from point A to B at normal speeds would require you to follow the whole length of the paper around the curve of the U, and would take ages. However, a wormhole from A to B would simply go straight through the gap in the U-shape, cutting travel time down significantly, should space-time be curved as Lawrence Krauss suggests (The Physics of Star Trek). Now, imagine that one point is moving through time, while the other is stationary, ie, "roll" the paper so the points seem to pass eacother. Now, if the wormhole from point A stayed in the same place, wouldn't you technically be moving to a different point in time if you went through it, since the other end is moving through space and time.

To quote Zathras from Babylon 5: "We cannot run out of time. Time is infinite. You, are finite. Zathras, is finite. This, is wrong tool"


Oh no I've gone crosseyed

I LOVE Ender's Game. I gotta re-read that sometime.

I believe time travel is possible. We just cannot grasp the ideas yet. Example...go back about 2000 years and ask people do you think it would be possible to send little machines on mars to take pictures? I bet there response would def. be no. Im not a genius but I think there is more to the universe than what most of us think . Time is not how we think it is. The faster you get towards the speed of light the more it slows down, it is not a constant, and to go beyond that speed, something must happen. Also the theory behind wormholes is not really saying going in a staight line its more like curving space time , I know its too much to think about but it is really interesting. I suggest researchin it rather than just saying...no its never gonna be possible. "Think outside the box"

Time travel has been mathematically proven as possible.
However, our theoretical understanding of the nature of the universe and the mathematics used to support these theories is flawed, at least in that it is incomplete.
So right now, all I know is that there is still so much exploring and learning about the nature if the universe to be done.
If time travel did become possible, it would be like the discovery of the atom bomb; a terrible weapon, for which human nature is not ready.

I agree with Magicrat, the world would fuck itslef over if time travel was possible.

Some underground time travel would probably happen, leading to crazy businessmen going back in time and buying stocks ;)

in case you missed it is immpossible for anything with mass to accelerate to or past the speed of light. and wormholes would not bring you to the speed of light, infact wormholes have nothing to do with speed, all they do is decrease the amount of distance from one point to another, like if i wanted to be in my kitchen right now i would have to walk about 30 feet, and what a worm hole would do is make it 1 foot.

and i would like to see where it was proven possible, i find it highly unlikely that is has.

Because I do not have an advanced degree in mathematics, I cannot say definitely whether or not it's possible. What I do know is this. Developing a theory of time travel would be akin to non-Euclidean geometry. Simply because it wasn't known for a while doesn't mean it isn't possible, I mean, parrallel lines can intersect (think of longitude).

However, the theory described by several physcists is very flawed. They basically made an enormous jump from a photon detector test to a multiverse theory. The idea of alternate universes has yet to be proven. Also, would traveling faster than the speed of light really let you travel back in time or just see the past. There's a huge difference

I thought traveling at the speed of light would put you in the "future" so to speak. You wouldn't age like everything that isn't traveling light speed.

no, theoretically travelling as fast as the speed of light would stop time,and travelling faster would reverse it, and mulitple universes is implied by string theory but there is no way to proove it, but there is no way to prove string theory. think of it this way our universe is a slice of bread in a loaf of bread, and the other slices of bread are other universes, again can't be proven.

let me say this one more time IT IS IMMPOSSIBLE TO TRAVEL BACK IN TIME, OR TRAVEL INTO THE FUTURE, (when i say in the future i mean faster than we are traveling through time(time dilation)).

Theoretically, if you travelled faster than light, you would actually travel backwards in the space time continuum or would you simply be able to view the past?

Also, off topic but loismustide, is your screen name in reference to Family Guy? if it is, more power to you.

of course its from family guy, i mean its only the best show ever

stewie rocks

Rock on

Well, you know that Stewie once made a time machine, so maybe if we were all animated and the laws of physics didn't apply...

What the heck is a wormhole and WHERE the heck are they?!?

wormhole, lets see, say the universe is a sheet of paper, now put two dots on opposite sides of the paper. what a wormhole would do is "fold the universe" so to speak, so the two dots are on top of each other, and the distance between the two points is dramatically decreased, like from millions of miles to a matter of inches or centimeters.

well, none has actually seen them, but they have been proven to exist, so i guess noone knows where the hell they are.

Even if we could go back in time and it was possible to alter time, some idiot would go back and change an event that, in the future would cause him to never need to go back in the past in the first place.

The basic point is that if a person goes back in time to keep "Event B" from happening, he would need to change "Event A". Once he changed "Event A", he would have had no need to want to change "Event B" in the first place, so "Event A" would remain unchanged.

Loismustdie, we know what they are, we've proven that they exist as you said. We just haven't figured out how to see them or use them (like we ever will be able to). I could be wrong, but since wormholes are two sided black holes, the shear gravitaional pull on even the event horizon would destroy any material being transported across, let alone the sphagetti affect that would occur towards the center. Not only would you be stretched going in, but condensed at the center, and restretched in the opposite direction while leaving. Nothing could survive those forces.

Also, Integra, there's a name to the paradoz that you mentioned, I'm not sure of the name, but I'll ask around about it, I know some people who very well might know.

this thread reminds me of the show Sliders and the movie Time Cop

well if u cant go through a worm hole couldnt we use their gravitational force to increase speed and somehow sling a space ship in a certain direction???

and i highly doubt n/e thing is impossible... people believe that we know so much at this day and age... but so did the people who lived during ww2... and the people before them... there are billions of universes and galaxies within our universe we cant even get out of our own galexy or even land a human on another planet yet.... to this day people are still inventing new elements that disapear once they are made because they are so reactive... with all the galaxies in this universe alone... i am sure there is a planet that has diferent elements that we can use to do things we think impossible today... will it be in my lifetime??? i dont think so, but all im trying to say it to just open up ur eyes instead of saying its impossible right off the bat

It's Immpossible

I agree with the idea that just because we don't know doesn't mean it isn't possible. Just because we don't know how the big bang could have worked doesn't disprove the idea.

However, we do know that not even light can escape a black hole (hence the name) therefore a slingshot technique similar to that used with planets would not be possible. That we do know.

A question I have about all of this is that from what I was taught in school is that matter cannot be created or destroyed, so if somehow you could travel back in time, wouldn't you be bringing more matter into that period of time and at the same time be taking it away from the period you left? Or would the two be connected somehow?

I'd just like to add to this thread, physics and math major here. If one was to theoretically exist outside the space-time continuum, looking in, they would see that all moments exist at once so to speak, it is hard because i do not want to describe time in temporal terms. If you were to look at the universe as a whole, you would see the entirety of all its dimensions, say just 4 for arguemnt's sake. You would see the entire length of the universe, the entire width line, the entire height line, and the entire time line. If you were to enter the universe, you could do so at anypoint of your choosing, (x,y,x,t). Just keep in mind by our concept of "time" is just our extremely limited perception of the forth dimention and our momentum along it.
According to the equations of relativity, when approaching c, mass tends to become infinite while length tends to be zero, as does time. Following the equations passed c, mass becomes negative, as does length. There are two equations for time, depending on frame of reference. For the object approaching c, time behaves as length, tending torward 0. Time in the outside universe behaves as mass, tending toward infinity. This is easy to see because if time has slowed down for the object by a factor of x, on the outside it has sped up by the same factor. According to the equations, time, a fucntion of velocity, is indeed negative for values of velocity greater than c, for both frames of reference. So traveling at speeds greater than c, you would not only travel backward in time for the outside, but you yourself would be getting younger, but not at nearly the same rate as the universe is. Also, theoretically traveling @ c, time being utterly stopped for you but infinite on the outside, you should then exist along the entire timeline, aka at every moment in time, and so be able to emerge at any moment there of. But of course this is all just theory.

Oh, and the total matter/energy of the universe never changes. Even an object changes location, changes it coordinates (x,y,z,t) in has not left the greater universe. Changing your t coordinate from 2003 AD to 1200 BC does not remove you from the universe, just changes your location.

Time travel is impossible. If it was posible then I would have already done it.:sunglasse

If we had the ability to travel back in time wouldnt we go back and tell ourselves? So if you were able to travel back in time and change something, you would be comited in the future to comit that action thus eliminating free will. Does this mean that we are already destined to do what we are doing. Can we choose? If we could look into the future would we be able to change it or would it already exist because we saw it happen?

lets stop talking about what we would do when we traveld bthrough time, because it adds nothing to the conversation, and it has no impact an anything in this thread.

to accelerate to the speed of light would require you mass to be infinite and therefore time would stop, but the second you reached the speed of light and your mass was infinite, this would mean that you would also have infinite gravity, everything in the universe would be pulled to you and therfore stop time, and it would be theoretically impossible to start it back up again unless, .........well i can't think of how to start it back up again (actually i do have an idea of how to start it back up again, but noone except for "mr. math major" would probly understand it.)

Well, if time travel was possible couldnt or wouldnt someone have already come the the past...our present, and said "check out this blingin' time traveling machine...what the hell is this ~Skyline" haha.
But seriously we would know of the future if someone else came back.
And that means that everything in the future is happening right now...in the present. So the apocolypse is happening, we just havent made it to that spot in time yet. Just say that you did travel into the future, what would happen if you went past the end of time?
But its not posible so...ohh well, but its cool to think about i could go save Randy Rhoads :evillol: !!!!!!!!!!!!!

jeez!..............you guys are telling me that you have never seen any movie where someone travels through time, they always dress like the time they are traveling to, and stuff like that, anything to avoid anyone knowing that they have traveled trough time, and thats exactly what any smart person would do. so don't say that we would know because the fact is we wouldn't.

and, secondly just to disprove it once again, we could have no control of where we were to "go into" the "timeline", so if we were to theoretically stop time, then we could not move through it or determine where we want to end up, and also there would be no way to travel back into the future.

I just want to know if you [loismustmustdie] are trying to flam/insult me whatever. If not, I wouldn't mind any intellectual debate. But if so, there is no reason. JFYI this stuff is what I plan on studying for the rest of my life, so of course I know a lot about it.

I don't see anything wrong with being a "math major". Anyway, approaching the speed of light would indeed create a situation where a body would have no time, no length, and infinite mass. With length=0 then it would have only 2 dimentions, and therefore no volume. Density= m/v, so the numerator would be infinite, and the denominator zero. I cannot fully understand what this phenomenon would exist as. Perhaps a giant infinite singularity. Anyway, as of our understanding now this is a situation that cannot exist, so as I said before, this is all theoretical and based on numbers and equations, not real world. But if the equations are correct, everything I have said is the result. BUT... the only way I could image us transversing time is, as mention before with skeptisism... is the Worm Hole. The whole U-shaped paper theory is correct, but what anyone fail to mention is that it is Space-Time, not just space, that can be beat. Entering a Wormhole on one side, a cetain (x,y,z,t) coordinate, will release you at a totally different (x,y,z,t) coordinate. But of course we'd have no control over this. Perhaps in the future if we could create artifical wormholes, this would solve all our problems, we could go anywhere, anytime.

sorry
beat=bent