I kinda get it. The closest we get to time travel is by seeing events occur just now that happened a significant duration of time ago, correct? Like watching a star. That star has likely died. (Minus the sun.)

As far as our knowledge goes (Which is relatively limited, compared to what's out there), yes. Not to say it's likely died, but if it has it would take lightyears to reach our location (Light can only travel so fast, whereas time is infinitely moving and expanding). Stars like the Sun are constant forms of energy. Sometimes, the energy collapses in on itself and the star implodes. When this happens, the actual vision of the event occurring has to travel millions upon billions of miles to get to our location. Because the speed of light has an actual speed limit, it takes a while to reach certain places that are farther away.

To bring up a new topic, I've been thinking about possibilities of time travel. If you were to go faster than the speed of light, obviously you would end up in the future. However, going slower would just make time slow down for you, NOT bring you back into "the past" so think of time on a straight line.
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In the infinite amount of moments, let's say the 0 represents where we currently are in time. To go forward, all we need to do is A) Live out the courses of our life; or B) Go faster than the speed of light in order to skip through events and end up somewhere ahead of where we would have been.
With that in mind, going back in time would be considered impossible. This is because once something has happened, it no longer exists (Feel free to argue with that one; I'm just figuring). However because the future has not happened yet (Yes, it is currently happening and all that jazz. Let's not go there), if we go fast enough we can skip an extended period of time to reach a different one.
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_______________________0_______—..............................—___1 Ignore all of the periods; this thing didn't like having multiple spaces.
The 0 is where we were, then we "jumped" ahead to point 1. Because we were going faster than light, we only felt like it was a millisecond (In theory) but really, we would have missed years and years.
Now, this is just based on current knowledge and a new idea could pop up that defies this. I'm just thinking out loud about how time travel could be possible only 1 way.

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Sparta: My idea is completely contrary to yours(the faster than light travel). Faster than light is impossible, but, if it was just in theory:
Once we got at a speed much faster than light to the sun(in around a minute or so), we can see from there the image of how Earth looked 7 minutes back. From there, if we are to travel back to Earth in a minute, we would see the things which happened 6 minutes back on Earth. So, going faster than light can give an insight into the past but not a look into the future according to me. So, the higher our speed than that of light, the farther back we go in time. Another example: Suppose we are, at this instant able to go to a star which is a trillion miles away from Earth in just a second, we would see the light reflected by Earth centuries ago. So, if we have some high power telescope or something, we may be able to see how things were some centuries ago. But, for going to future, you would have to travel slower. That is how we go to future. In simple words, you can go to 'tomorrow' in 24 hours without moving. But, you'll have to travel at 100000000000... Miles per hour to go to yesterday in the same time. And, travelling at speed of light would make you stay in the same instant forever that way.

However, there is a major flaw in what I discussed above. In reality, time continues to move forward as we 'see' things. It is just the reflections of things which create the illusion of being in past. So, even in theory, according to me, we cant travel in time or make time stand still. It must always keep moving forward.
So, we may be able to create a time-camera which can take pictures of past but we cant actually go to the past.

Now, to think of it, maybe stopping time would require a very large source of energy which may terribly decrease the entropy of the universe so in order to increase the entropy, the universe itself responsibly makes time go uni-directionally forward.

Wouldn't that only be true if light was definite? I mean, you technically wouldn't see ANYTHING. Sight is just how your brain interprets light. So moving faster than that wouldn't mean anything. Plus you don't see or hear things as they happen. It seems simultaneous, but the waves still have to reach our eyes/ears. When you think about it, light is a wave, but we don't really know if waves are particles or something else. Sometimes they act like particles, sometimes not.

Umm, no, my first example might have been erratic. But, according to me, if we go faster than light to a certain planet X which is very far away from Earth, we would be able to see the light that was reflected from Earth moments/years ago(depending on the speed and distance travelled). Of course, I am not too sure if the same can happen when travelling at such a high speed on Earth itself because there are too many places to absorb/block the path of light on Earth so... The light reflected some years back may not exist properly. But yeah, I am not too sure about the idea..
I agree that we wont be able to speak or hear things but, we would be able to see things because... Thats how we see planets and stars which are light years away. We only see how they appeared years ago. We cant possible see how they look at the moment. Perhaps, they might have died as well by now.. But, who knows..

Light and matter have dual nature BTW. So, assuming light's particle nature, a better explanation would be:
Assume the particles of light to be a superlong filmstrip on a bullet train. Assume each picture on that filmstrip represents the light reflected at a particular time. So, if you travel slower than that bullet train, you can only see the strip instantaneously and you cant take a look at that part again. If you travel at the speed of the bullet train, you will keep seeing the same part of the strip forever. And, if you travel faster than the train, you can see the part of filmstrip which went past you sometime ago or even before that. But, you cant go back and see what part of the strip is yet to appear, because to you, the bullet train is like a ray. Its end point is in front of you and it goes forward in one direction only. But, you cant go behind its end point...

I am very sleepy now so I'll improve this explanation with some diagram or explain it properly in the morning.

I'm referring to the part where you say "You see." At that point, it defeats the purpose of moving faster than light. You can't see anything if you move faster than your source of sight.

oooh, i like this topic. always interested in time travel. ok, im not going to go in how time travel is possible or not, but im going into what would happen if there was. if it were possible, and someone or something was using it, how would it affect us. i think, it may already have, it may link to our development of technology. my link to all the things some random people thought they saw but proven they actually didnt, a whole lot of other things. might even explain what happened at the begginig of the universe (big bang theory, the energy had to come from somewhere, so why not the futre), in fact, maybe at the end of the universe, the energy was so much it sent it all to the begging of time, i dont know, we dont know, but i like talking about it. personaly, i dont have any theorys on how it could be possible, nor stuck to anyone elses theorys, but i like reading about them and reading how they go in action (or watching in the case of a film or tv show).

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I'm referring to the part where you say "You see." At that point, it defeats the purpose of moving faster than light. You can't see anything if you move faster than your source of sight.

I might have misinterpreted your post, but, what I am saying is, we cannot see light when we are travelling faster than it, but after coming to a halt, of course, we can see it. It might as well be possible to see it in the course of travel but I'm not very sure about that. So, yeah, all that I wrote was about what will happen after we stop and see the reflections and not while travelling.

That's my point. The reason time travel is impossible at this point in time is because we are already time-traveling by that definition. Since we see things after the light has reflected off of a specific phenomenon (Let's call that point X), you don't see X as soon as X occurs. You see it once the light bounces off, reaches your eyes, and your eyes registers that light. While, naturally, all of this happens in less than a second, you are still seeing X a split second AFTER X first reflected light.

Yes thats true. But, theorotically, it wont be impossible to see an event after it has occured. However, we may not be able to see it at the exact same place where it occured. We might have to go some miles or some light years away to see what happened in the past. And as I said before, time would still be going forward in this process. So, we can only 'see' the past and not visit the past.

If a star 3000 light years away from Earth went supernova 2800 years ago, then we only have 200 years to see it happen.
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I don't know much about the theories of time or dimensions. I'm more interested in the study of sleeping and dreaming, which is why I plan to minor in Psychology.

Sometimes dream theories cross over and become dimensional theories as well. Some people believe that dreaming is a physical realm, just like the one you're in when you're awake. They believe that you just cross back and forth between these realms when you fall asleep and wake up. It's a pretty interested theory, but not one that I believe in. I prefer to go by my own dream theory, that dreams provide a safe and quiet place for us all to be insane.

As for time, I'm aware of Einsteins theory on the matter. Stating that we would have to travel around the world at the speed of light. Also, I'm aware that we would only be able to travel to the future, and not the past.

Actually, there is one dimensional theory I'm aware of that doesn't have to do with sleep theories. It's something involving wormholes, but it was proven incorrect.

I prefer to go by my own dream theory, that dreams provide a safe and quiet place for us all to be insane.

Actually...that theory holds some weight of truth.

Really! Think about it: Society today has so many things we deem "fit" and "unfit" and we try to conform to all of these things. Having a place where society doesn't exist may be perfect for the brain to create its own little "vent-box" so to speak. Often, I try to analyse dreams, meaning find out why I dreamed what I did. Usually, everything can always connect to something that happened recently. Building on your theory, I want to say that dreams can recreate events in a weird, twisted way that allows your brain to freely vent any extreme feelings it may be trying to contain.

As for the time travel possibilities, @N0body I'm just curious about one thing you stated: you said that if we travel to a star we would see earth from whatever years ago.

I like that idea. However, you wouldn't be able to be a PART of that past. Yes, maybe scientists will develop some sort of extra super-powered telescope that will allow you to see the earth in clear detail, but by the time you get back to Earth it will be the time you would've arrived back, not the past anymore.

I feel like you can only affect the future with your presence, but not the past.

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Yes. I guess I forgot to mention that point. Time will continue to move forward always. We can never be a part of the past. And, if it takes a day to reach that faraway place from where we see the Earth of past, then by the time we arrive, we would already have missed two days on Earth. E.g. You go on Monday and return on Wednesday/Thursday.

I feel like I am repeating same thing over and over again now..

To slow it down by two minutes, and we will eventually find a way before the year 9999. It's a form of time travel to slow it down at the least, because we already know going back is impossible. That or I'm believing too many things at once.

it may be possible that we can go back in time.
Requirements:
a supersonic vehicle with a huge fuel capacity(i mean god capacity)
Method:
the international dateline is a long vertical imaginary line down one side of the earth.going from one side of it to the other u subtract one from the current date so circling around it a lot of times can take us into the past or future

Actually, that would not affect time at all. It's an imaginary line that simply points out the connect between one half of the time zones and the other. Kind of like a gap between AM and PM.

No the international date line is a gap between two days you will go throgh time or back passing through the international dateline

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Did someone debate my statement using imaginary lines?

Er.... Oookay.... Pretty sure a page or two in the Geography textbooks were missing....

looks like u need a new text book!!

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it may be possible that we can go back in time.
Requirements:
a supersonic vehicle with a huge fuel capacity(i mean god capacity)
Method:
the international dateline is a long vertical imaginary line down one side of the earth.going from one side of it to the other u subtract one from the current date so circling around it a lot of times can take us into the past or future

Actually, that would not affect time at all. It's an imaginary line that simply points out the connect between one half of the time zones and the other. Kind of like a gap between AM and PM.

No the international date line is a gap between two days you will go throgh time or back passing through the international dateline

In the Suite Life of Zach and Cody, it is. In real life, not even CLOSE. The IDL is the gap opposite of the gap between AM and PM. It runs along the center of the time zones. Do your research.

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

"The IDL is an IMAGINARY line on the surface of the Earth, that runs from the north to the south pole and demarcates one calendar day from the next. It passes through the middle of the Pacific Ocean, roughly following the 180° longitude but it deviates to pass around some territories and island groups.

The International Date line is on the opposite side of the Earth to the Prime Meridian. The Prime Meridian helps to define Universal Time and is the meridian from which all other time zones are calculated. Time zones to the east of the Prime Meridian are in advance of UTC (up to UTC+14); time zones to the west are behind UTC (to UTC-12)."

Time zone break, as I said.

Actually echoes, an established measurement reference doesn't equal time travel possibility.

The world isn't like Harry Potter or Marathon (FPS trilogy)

There is a dimension in which pokemon are real and i prevail as the best!!!!

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But on topic. YOU PEOPLE ARE THINKING LIKE SCIENTISTS!!!!!! Wonder why america is in trouble acedemicly...

well if he had a chemical reactor along with some plutonium floride he could acces enough power to chang the equators magnetic pull and reverse or accelerate time.duuuuuuuuuuh

well if he had a chemical reactor along with some plutonium floride he could acces enough power to chang the equators magnetic pull and reverse or accelerate time.duuuuuuuuuuh

The equator doesn't have a magnetic pull; the earth does. If the poles reversed, nothing big would happen. Evidence in the rocks in the bottom of the sea show that reverses of the earth's poles have happened before.

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There is a dimension in which pokemon are real and i prevail as the best!!!!

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But on topic. YOU PEOPLE ARE THINKING LIKE SCIENTISTS!!!!!! Wonder why america is in trouble acedemicly...

actually there is a vey high chance that pokemon/yugioh/digimon ect. is real in opposite dimensions or we could create our own with a plutonium generator and an atom scrambler.

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Um, Pokemon...?
Anyways, I once heard something about there being universes right next to us that we can't even see or feel, and they're just a razor's length away from us. Think of it as sliced bread. When you slice it pretend each of the bread pieces are a different universe. The slices are almost touching, but not quite. Since the universe is expanding all the time, we cannot keep up with the speed of its expansion, at least not yet with the current technology, which means we can't reach other universes. I actually don't think there will be technology advanced enough to do that, ever... just my opinion.

who knows pokemon might be out there

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Unless we invent something which makes us roam around in Satoshi Tajiri's head, there's no way for Pokemon to be around.
The idea of parallel universes does appeal to many people but for some reason I do not find it as credible as others do. Parallel universe is just fiction. I mean, we don't even have proof of parallel universes existing and yet so many think that there are parallel universes with Pokemon or Yugioh or stuff. Honestly, that kind of thinking is just like an ignorant child's optimism.