Does Time Travel exist?

Cool topic!

I think time travel will eventually be possible, if we don't destroy ourselves first or get wiped out by some natural event (which is very possible) before reaching that tier of technology. I think at first we'll be limited to the natural laws of physics, like only being able to travel forward in time, but maybe we may even be able to eventually break or bend the laws of the universe themselves. I know currently on the "Kardashev Scale" we're essentially a Type 0 Civilization. There are theoretical Type IV and Type V civilizations that can harness energy from the entire universe, even escape and possibly enter OTHER universes. All theoretical of course, but still very cool to think about.

* Type I — a civilization that is able to harness all of the power available on a single planet
* Type II — a civilization that is able to harness all of the power available from a single star
* Type III — a civilization that is able to harness all of the power available from a single galaxy
(theoretical)
* Type IV - a civilization that is able to harness all of the power available from multiple galaxies
* Type V - a civilization that is able to harness all of the power available from the entire universe
* Type VI - a civilization that is able to harness all the power available from the multiverse - Gods??
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I think if we EVER got to that point anything would be possible, we'd essentially have a limitless amount of energy and be able to manipulate anything we would want. So, time travel would definitely be possible, but I doubt the human race would even make it that far.
 
@pokequaza, I'm not saying that it is a deity or something controlling it, but more like an undiscovered Law of Physics. I personally think that if time travel to the past is possible then no matter what we wont be able to change the outcome of events. I'm not going to go into any religious discussion for obvious reasons.
 
Xenowolfx said:
Has anyone thought the cell phone maybe them carrying a radio.
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Radios in 1920 were huge. They used vacuum tubes. The first transistor radio came out in 1954.
 
Well for a final answer, time travel is physically possible. The real question is whether we will achieve it or not. If we ever did, it would probably take thousands of years or so. Yeah we can make subatomic particles travel through time, but compare how much mass they have to our mass. Their mass is so small, they have their own measurement. Atomic mass unit, or AMU for short. I don't know how many times more our mass is, but it goes into HUGE exponents. So the step between making a subatomic particle move near the speed of light and a 180lb human (just putting a good average weight.) is enormous and will take a very long time.

And since so many people are talking about traveling back to the past, right now we truly don't know. This question won't be answered for a long time. There's theories supporting both sides of it. Sides against it would be how time only travels in one direction, meaning it's physically impossible to go to the past. Another would be all the paradoxes it creates. (Such as if you were to prevent your birth, relationship from your parents, and millions more.) Stephen Hawking has said things against it too. But on the other hand, there's theories supporting it. One way would be with a wormhole. Supposedly if one end is going at the speed of light while the other is fixed, traveling from the fixed end to the one at the speed of light would go into the past. That's because the fixed end is going through time faster, because time at the one at the speed of light is going slower. That's due to it going to speed of light. Therefore when you travel from the fixed part to the one at the speed of light you are actually going to an earlier time. Unfortunately, to create a worm hole to do this would require extreme amounts of density and energy, and the ability to control the wormhole so you don't go into some random part of space. As of now we don't know enough about them to be sure, and aren't sure on exactly how they work. We do know that we would need negative density, however. To create negative density, you have two electrically conductive plates facing each other at very small distances. This creates a negative density between them, and was proven inside of a vacuum in a lab. This idea is very hard to do though. The other idea is cosmic strings. I don't fully understand the whole concept enough though to explain it. Here's the website I found a bit of this on: http://www.time.com/time/magazine/article/0,9171,996610-2,00.html

So traveling in the future is possible. Traveling into the past is unknown, there's theories on both sides. And that lady could have been holding anything. I doubt it was something from the future. Wouldn't there have been more than a single case if they could? I wouldn't think too much on what she was holding. It was a little unclear, and was probably nothing big.

Also @Pikachewtofu: Are you sure a man went into a black hole? I'm pretty sure they would be making this up. He would be ripped apart, we have no way to put humans into black holes as of now, the force is simply too strong. Also how do they know? How could the guy return? Surely he or the spacecraft he is in would not have the energy to pull out of a black hole. A black hole the size of a marble has enough energy to pull in the earth. Not only that, but we can't see black holes. Only the light going into them as it sucks everything around it, in. I'm just saying that I think the show was saying something else, I'm not trying to sounds mean. :p
 
^I forgot really, something about a black hole or worm hole or something. Sorry for my memory, I saw the show over a year ago. I remember though that somehow he distorted time.
 
@pokequaza, I'm not saying that it is a deity or something controlling it, but more like an undiscovered Law of Physics. I personally think that if time travel to the past is possible then no matter what we wont be able to change the outcome of events. I'm not going to go into any religious discussion for obvious reasons.
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We humans have something called 'free will'. If something in the past was able to be changed, I imagine that everything from that point forward would instantly self-adjust to account for that one change and of course anyone from that moment on will never have anything different in their memory except the newly adjusted past, which will seem like it has always been that way. But see, that might not work. It kinda depends on the event that took place. A minor event will most likely not have a huge effect on someone. A big effect is a different story.

I'll bring up the point on killing Hitler. If I was to kill Hitler at a young age, WW2 will never happen, meaning my Great Grandpa would've never gone to the war and never died, meaning my Great Grandma(who moved to NC when my Great Grandpa died) would have never moved, meaning my Grandpa would have never met my Grandma, meaning my Dad would have never been born, meaning I would never be born. You might say "Durrr, that only applies to Hitler". Wrong. I can think of various other scenarios that might not look like they effect my life, but they do. You can link anything back to yourself.

I'd also like to point something out; It's the Past, meaning it already happened. We live in the Present. Seeing as the Past already happened, it can't be changed. You're standing here! Meaning NOTHING HAPPENED! You can't travel to the past. If someone were to go back in time, they'd do something MAJOR! If I were to travel to the past, I would. I wouldn't travel back in time to see a 1930's Movie, or to meet the President. I'd try to prevent stuff from happening. Again, seeing as you're standing here, reading, nothing major happened.

Whatever happened, happened!​
 
First of all, to clear some things up, whether it was a mistake or not; you cannot travel through a black hole. For those who do not know this, a black hole isn't a hole, neither it is black, in fact we cannot see it so we never will know what color it is, probably white considering it's high temperature. A black hole is an object with a very low volume and a immense high mass, creating its extremely high gravitational pull. In fact, the gravity around a black hole is so strong that it makes itself shrink even more.

About the Butterfly Effect posted by TheDarkLucario. Wind does not cause tornadoes, warm and cold air colliding in the air results in tornadoes. And the chances of a butterfly flapping its wings and preventing one are nihil, not even worth mentioning.

@ShadowArceus. Well to be honest, an intelligent being controlling us would make more sense then. How can a force make you getting killed? This 'force' therefor has to know what you are planning to do, and even then nothing is sure. Who says you will actually do what you were planning to do. This force has to know that you, a bunch of atoms and chemical reactions, won't be born in the future. There is no force that could do that. How nice this idea may sound, this is pure fiction.

Like I said before, if one were going to travel back in the past it would create an alternate timeline, let's call it timeline B. If you would go back to, let's say, 1920, then it wouldn't be even certain that Hitler would gain so much power. Even when you keep yourself quiet and when your actions don't have any consequences to your environment another person might to decide to stop him from gaining power before he does. Those people in timeline B aren't marionettes, living like zombies and doing everything that has happened before. They can also make their own choices. Therefor the chance is already pretty small you would even be born at all. In certain sence I agree that what happened is happened and cannot be changed, though like I said you could theoretically travel to an alternate universe in the past. If one would rewind time that doesn't mean that everything is going to happen as how it did previous time, it's a random process, if one was able to rewind time far enough in the past humans might not even come to existence, who knows.
 
Pokequaza said:
First of all, to clear some things up, whether it was a mistake or not; you cannot travel through a black hole. For those who do not know this, a black hole isn't a hole, neither it is black, in fact we cannot see it so we never will know what color it is, probably white considering it's high temperature. A black hole is an object with a very low volume and a immense high mass, creating its extremely high gravitational pull. In fact, the gravity around a black hole is so strong that it makes itself shrink even more.

About the Butterfly Effect posted by TheDarkLucario. Wind does not cause tornadoes, warm and cold air colliding in the air results in tornadoes. And the chances of a butterfly flapping its wings and preventing one are nihil, not even worth mentioning.

@ShadowArceus. Well to be honest, an intelligent being controlling us would make more sense then. How can a force make you getting killed? This 'force' therefor has to know what you are planning to do, and even then nothing is sure. Who says you will actually do what you were planning to do. This force has to know that you, a bunch of atoms and chemical reactions, won't be born in the future. There is no force that could do that. How nice this idea may sound, this is pure fiction.

Like I said before, if one were going to travel back in the past it would create an alternate timeline, let's call it timeline B. If you would go back to, let's say, 1920, then it wouldn't be even certain that Hitler would gain so much power. Even when you keep yourself quiet and when your actions don't have any consequences to your environment another person might to decide to stop him from gaining power before he does. Those people in timeline B aren't marionettes, living like zombies and doing everything that has happened before. They can also make their own choices. Therefor the chance is already pretty small you would even be born at all. In certain sence I agree that what happened is happened and cannot be changed, though like I said you could theoretically travel to an alternate universe in the past. If one would rewind time that doesn't mean that everything is going to happen as how it did previous time, it's a random process, if one was able to rewind time far enough in the past humans might not even come to existence, who knows.
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So, in conclusion, you're saying, "I'm an atheist, what I say goes, everything has a scientific explanation, and there is no God." Go to church. May He have mercy on your soul come judgement day.

(And by the way, in order for you to say, "There is no God." you must first find something to deny. So, by disclaiming God, you are acknowledging his presence. How can you say you don't believe there is a "being" or "deity" when you have just acknowledged such things? Just food for thought.)
 
bacon boy said
If anybody is curious about the mathematics behind the weirdness of time dilation and its derivation, I'd be happy to write up an explanation as I express an interest in teaching.

lemme c.
 
@Rikko: So in conclusion your saying "I'm not really respectful of people's religion or thoughts of life." :/ There is a difference from disrepect and discussing. Which is sad actually, it shows how people that are different from another just can't get along. And by the way, when you said "May He have mercy on your soul come judgement day." If he doesn't believe in the God you believe in, then why would he believe that anyway? Basicly that statement just cancels your other statement out. Also, he really didn't say "There is no God" exactly, AND the fact that your sentence makes no sense and is logicly wrong...fill it in with a different word or name.

I'm not really trying to disrespect something if that's what it sounds. I'm just trying to defend something else.

Back on topic, it seems that cell phone is really large and that it couldn't be from current time, so it had to been from the past to even more back into the past, which would be impossible unless it was something like a wrinkle in time. Or it was a fake/something else.
 
"(And by the way, in order for you to say, "There is no God." you must first find something to deny. So, by disclaiming God, you are acknowledging his presence. How can you say you don't believe there is a "being" or "deity" when you have just acknowledged such things? Just food for thought.) "

@Rikko - so Santa must be real following your logic.
 
A myth and a god are two different things. The myth of Santa Claus has a definite origin, a definite storyline, and is easily definable. Show me religion's story. Show me the first ever mention of God. You can't.
 
Read h2g2. Explains everything.

Proof denies faith, and faith denies proof in a strange way, so therefore if God were to exist there would be no proof, and that is where we stand. (We have got some proof)
 
I agree with Rikko, because that's simply what I believe, no other reason.

@Mods is this acceptable content? Answer by editing my post. :)
 
To make it simple: Time travel doesn't exist. Time is simply a state of mind.

Reasons to support my statement:
1) The longer you are alive and awake, the shorter a day is to you; as in this example: You have been alive for ten years. One year is 1/10 of your lifetime. Now you have been alive for twenty years. One year is 1/20 of your lifetime. Simple as that. You think the time is shorter because your mind tells you that it feels shorter.

2) You can't travel in time. If you went to the past, which is impossible, events would be changed be your travel. You might kill yourself or your mother in the past, killing the traveling you, making killing yourself impossible. Future is different, though. It also doesn't work because the future isn't decided.

This is simply my point of view.
 
That is a very good point. But surely time exists across everything, and the future is already laid out, and we play into it?

(I am supporting the fact is will never be possible.)
 
Whoever makes a post about religion again will get a warning, as seeing the debate that's been going on for a while, this thread is for time travel.

At the two posters above me, I have a few things to say. Time is not just a "state" of the mind. What if I thought time didn't exist for me, would I live forever? Time is actually what's called the 4th dimension. Time is everywhere, you can't change that. Time only has two directions, forward and back. As a note, time is also related to speed.

How is the future laid out? Are you saying everyone already has a predetermined destiny? Everyone in the world will do something and die a certain way and there isn't a single way to change how that can happen? I find that hard to believe.

Time travel HAS been done, if anybody has read my previous posts. We have conducted it with subatomic particles that we accelerated to near the speed of light. Is it possible for us? Not right now, but I bet in the future at the rate technology is growing exponentially we eventually will. When going near the speed of light, time for you goes slower. The faster you're going, the slower time is going. The slower, the faster it is. This has been proven with the clock experiment in a previous post. There was a stationary atomic clock and one accelerating at fast speeds. They were set to the exact time. The one that was traveling fast was actually found out to show an earlier time than the stationary one. We have scientifically proven that time travel is indeed possible.

I do agree however that traveling to the past might not be possible. However, there may be something weird we will find out in the future. The whole world thought the world used to be as flat as a pancake, right? We proved that wrong. We also went to the moon, made particles travel through time, etc. Sure it might not be for a millennium to come but you never know.

@Azelf Master: While I agree with your second point, I disagree with the first. How is time changing as you age? Wouldn't you agree that when you are born, a day is 24 hours? And when you're 50 it's still 24 hours? To me it doesn't feel shorter. Sure it feels like the years went by fast, but each year goes at the same rate.....one year. If time were a state of the mind, time would be different for everybody. That's not true now is it? If that were true, some people would reach a certain age at different times. The only time that time is changing for you, is when you're nearing the speed of light. We are not. And when nearing the speed of light, that actually creates time travel.

Take a look at my previous posts which go a bit more in depth about how time travel is possible. It's been proven, no changing that. The past however is what's questionable and nobody at this time can answer it no matter how right you think you are, we don't have the information or technology. Also if you saw bacon, he is a third year astrophysicist and said to PM him if you have question pertaining to the mathematics to time travel. So if you have a hard time understanding from my posts you can probably ask him.
 
Time DOES feel different for everyone. For example, take my family. Age 10 thinks time is very slow. Age 8 and 12 have no opinion. I (age 13) think time is very fast, likewise with my parents.
 
Azelf Master said:
1) The longer you are alive and awake, the shorter a day is to you; as in this example: You have been alive for ten years. One year is 1/10 of your lifetime. Now you have been alive for twenty years. One year is 1/20 of your lifetime. Simple as that. You think the time is shorter because your mind tells you that it feels shorter.
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You're close, but not right. A day still feels 24 hours long, but it just another one. This month I will celebrate my 21st wedding anniversary, and I wonder where the years have gone.
 
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