Do you think this there is a way to travel back in time?

Question

This is my theory...
I believe space may not be infinite, but rather looped together at each end, much like the equator of earth. If you travel far enough in one direction, you will end up in the same place you started. Time may work in the same way. If we travel far enough into the future, maybe we will end up in our past - or actually, the next occurrence of that same event. Our universe may end with the very thing that started it, the "Big Bang".
Assuming this is true, would it eliminate paradoxes like killing your grandfather before you were born? You would still exist, but your next 'generation' would not.

Does this sound plausible?

Yes, the universe would have to deflate before the Big Bang could occur again.

Answer 1

There are two prevalent theories about time travel to the past (aside form the notion that it's not possible): temporal causality and temporal inevitability.
Temporal causality states that you can go back in time and do whatever you want, including killing your grandfather, and this will cause changes in the present. The theory leaves you to your own devices as to the paradox it would create.
Temporal inevitability states that you can go back in time, but you do not create any paradoxes. Since you are alive, obviously neither you nor anyone killed your grandfather before your parents were born, regardless of time travel. It's not that you can't, it's that you just don't. People who are too attached to the idea of free will don't like this theory.
Your theory somehow merges the two, so that you can go back in time and change things in a way that would normally cause a paradox, but those changes do not affect your present. A very interesting proposition, and just as good as many of the off-the-wall speculations that supposed "experts" put forth.

Answer 2

You have disproved your own theory by mentioning the big bang, which postulates time and space begin at that point. In order for time to be reset per your loop theory we will need look at the collapse of the universe through the reverse process of the big bang - deflation.

A more plausible theory out there is called the Oscialltion theory which talks about the same time and space restarting after every expansion/deflation cycle.

Answer 3

To begin with, you may be right about "space . . . looped together at each end"; in fact, that's one of the three major cosmological models. (It's the 'closed' universe). Whether our Universe is actually that way depends solely on the amount of matter inside of it: and we don't yet know if there's enough to create the universe you describe.

As for time travel, we already know that it's possible to time travel into the future. All you have to do is go really fast. Einstein's relativity tells us that time is not the same for all observers, and if you go somewhere quickly with respect to an observer, time will pass more slowly for you. So, for example, if you got in a very fast spaceship and flew around for a few months (as measured by your clock), and then returned to Earth, you would be older by only a few months; but hundreds of years might have gone by on Earth.

As for traveling back in time, no one knows, but it's doubtful. There are some theoretical ideas (wormholes, spinning cylinders), but unlike forward time travel it's really just a guess.

Answer 4

If your theory were correct, a "loop" would imply that all is the same the next time around. If you reached the past by travelling completely through the future and "looping" to the next occurance of the event you wished to witness, you could conceivably kill your grandfather without ceasing to exist.

However, never again would the successing loop be the same as the previous one. You wouldn't be born again to travel back in time again, so you wouldn't kill your grandfather again, etc. Although by that logic it might be possible to have every *other* loop be the same, I suppose. heh

Answer 5

I wud rather tell you to have a read of theory of relativity.....which is pure invention of einstien

travelling back in time is not possible .....but sumhow if u managed to travel at the or close to speed of light....u can move ahead in time.......but again dis too is unrealistic !

The grandfather paradox is a very simple, science-fiction-based apparent inconsistency at the very heart of the idea of time travel into the past. It's very simply that you travel into the past and murder your own grandfather before he sires your mother or your father, and where does that then leave you? Do you instantly pop out of existence because you were never made? Or are you in a new causality scheme in which, since you are there you are there, and the events in the future leading to your adult life are now very different? The heart of the paradox is the apparent existence of you, the murderer of your own grandfather, when the very act of you murdering your own grandfather eliminates the possibility of you ever coming into existence.

Among the claimed solutions are that you can't murder your grandfather. You shoot him, but at the critical moment he bends over to tie his shoelace, or the gun jams, or somehow nature contrives to prevent the act that interrupts the causality scheme leading to your own existence.

Answer 6

I'm sorry, but, your theory isn't very plausible.
The past can never again happen, it goes against every aspect of physics. The past doesnt exist, its like it never existed and all we have are meer objects to remind us of it.

The future on the other hand is different. the future is always coming. And since speed of light = time, travelling the speed of light will allow you to go into the future.

Since in space you do not age, starying in outer-space for a million years and then returning is another way of going into the future, but since a million years is too much, scientists need to find out a way to freeze or hibernate the human body. WORMHOLES are also an interesting theory.

Now let's say you acually went back in time and killed your grandfather. It very hard and complax to understand. If you kill your grandfather in the past, as soon as you kill him, you will dissappear, as you've never had existed. But I though about it and realized that thats not acuallt what happens.

You see, when you go into the past with the idea to kill your grandfather, the future is already set that your grandfather was killed and you and your family never existed. So basically as soon as you enter the 'time machene' you ceace to exist.

And now let's say you travel into the future, find yourself, and punch yourself, and return to normal time. At some point in your life, YOU are going to pop-out of nowhere and punch you, and YOU dissapears back in time. But where did the YOU that punched you go to? Would that mean that there are acually time barriers?

And the first time you decide to go and punch yourself in the future, wont the future you be aware of this, as it is himself that decided to punch himself in the past?.....yes very complex indeed.

But hear this.... Scientists see NO WAY of being able to teleport people in the near future. BUT they have a few theories and idea of how they might be able to travel to the future. And don't worry sci-fi fans, It might not be any time soon, and it might not even be in your life-time. But I have a feeling someday teleportation will be possible.

Hope this has helped =)

Here are 2 websites about time=travel:
http://en.wikipedia.org/wiki/Time_travel

http://www.pbs.org/wgbh/nova/time/index.html

Answer 7

I believe the opposite. Space AND time are infinite.
In my blog, August 16, I attempted to explain this. Here is a partial quote, which is a partial quote from a paper I wrote a while back:
".........................................................Picture, if you
will, the same picture(of the big bang) reversed and the end against
the beginning of the Big Bang. Now visualize an infinite
number of these stretching back through all of time....."
"........Time is a cross reference to eternity. Time refers to
a sequence of events portrayed in the "now" of our
beginnings. Eternity has no beginning, no end. The Big
Bang is just a reference point we juxtaposed upon
eternity to give us a reference point to our own
understanding of the universe."

With that knowledge all we would need is an insertion point to travel forward or backward in time(plus the capability).
...jj

Answer 8

It's true that space is not infinite, and probably space is more like the surface of the Earth, except that it's a 3D surface of a 4D sphere.

Time, as I think of it, is more like space than the normal "time". Time may in fact be 3 dimensional, except for the fact that our 3D universe is in the 3 dimensions of time, and there's an infinite number of those universes. And each person's experience is simply travelling from one universe to another. For example, if you choose to kill a cop, then you go into the universe with the cop killed. If you choose to hack a website, then you go to the universe with you hacking a website. For every infinitesimally small period of time, you go into a new universe. Every year, you go through an infinite number of new universes, every second, you go through an infinite number of new universes, every nanosecond, you still go through an infinite number of new universes. Every 0 seconds, you go through a *finite* number of universes. Every time you go into a new universe, you're going through the 4th, 5th, and 6th dimensions. So when you go back in time by warping time in the 5th or 6th dimension, you're not changing the past. You're just a result from the past. However, you can still have a different experience and change the past and you're now in a new path in time. Just because you're changing the path in time, doesn't mean you're changing the past.

So if you go back in time and kill your grandfather, you're not changing the past, because in your old experience, which is what you depend on for your existence, your grandfather is still alive, it's just that you chose to go back and start a new experience.

Answer 9

Look up a scientific paper titled Rotating Cylinders and the Possibility of Global Causality Violation. Make sure it is not the fictional story with the same title; I think the author is Frank Tipler.

Answer 10

I generally desire floor return and forth, yet for long journeys, air return and forth is plenty quicker, so i will use it if i'm in a huge hurry. i've got moved from the East Coast to the West Coast, and the form of holiday takes approximately 4 or 5 days via automobile, if i do no longer give up long everywhere, yet there is plenty exciting surroundings alongside the way that I omit via air return and forth.