Is Time Travel Possible?

Question

Is Time Travel Possible?
Not neseccarly now but in 100 - 1000 years do you think its possible?
I think it owuld be possible to go back in time but not forward in time.
If some one travels back in time what happens to the current time? it just stops or it keeps on going or what > do you think that if time travel were possible the govt would use it to prevent things and terrorist attacks or under no circumstance would it be allowed if it were possible?

Answer 1

1st part: Yes relativaty sort of allows time travel- but it will not let you travel back to before you made the time machine.

You are in fact wrong- you can quite easily travel forward in time- as you speed up, time slows down, so by travelling close to the speed of light, fore very year that passes for you, several pass for everyone else (yes this has been done- astronauts in space age slightly slower than on Earth. Atom clocks have proved the theory even more strongly).

You can NEVER travel back to before you made the time machine. This is why we aren't being visisited by the future. No theory allows time travel before you made the machine.

As for the "current time"- imagine it as simply a place which you leave. It doesn't stop or anything. Imagine time as a line that we move forward along and time travel as hopping between points.

And preventing things like terrorist attacks: this is 100% impossible. There are two theories:

1. If you go back in time and change something, you createa parallel universe where the future plays out differently. In the original timeline, which still exists, there is on change.

2. (The more accepted one amongst physicists): The so called "Self consistency principle"- time travellers cannot change history as they were always part of it- you can't alter anything.

An example I like to use is the Titanic sinking. Even if there were time travellers on the Titanic, they obviously failed to stop it sinking. You can go back in time (but not before you made the machine) to make what happened happen, but not alter it- so you could go back in time an cause the titanic to sink (but you cna't change how it sinks) but not to stop it.

So the government could send people back in time to a terrorist attack, but nothing they coudl do could stop it happening.

Technically, time travel has already happened- atom clocks have shown time to pass slower at higher speeds. However, we will never see the sort of time travel you get in things like Dr Who or Back to the Future.

Answer 2

There's just one small problem with your question. If we can travel back in time (because it existed), but not forward (it hasn't happened yet), begs this question - Let's say for the sake of argument that time travel will be possible in 200 years time. That means that they can come back to today (for a visit, and see gas prices at $3, instead of the $300 they pay), but for the residents of Earth today, they will have come from a future that does not exist, so how can they have done this?

And what if they take a 'today resident' with them? The new passenger (according to you) won't be able to go, because they would be entering a future that has not happened for them yet.

Or indeed the plans for the time machine are copied in the here and now, re-built (with help from our future visitors) and used. Does this mean it can be only used to go backwards, even though the machine was built using technology from the future?

To be honest, time travel seems unlikely due to the infinite problems that arrise just from posing a simple question.

Answer 3

Well there are theories. You heard of warm holes in sci-fi movies right? well it doesn't come from nothing.

It kind to hard to grasp this but try to add another dimension to your everyday 3-dimension perspective. So now you have 4-dimension and this is what they mean when they say time-space. Simple way to see this is capturing 3-d picture at different time but try to see this in flat perspective and fold this flat plain. If there is a portal "worm hole" it will link two points in time or location. Some say these portals exist some say this is just don't have enough scientific fact or stable equation.

Answer 4

as noted above we're always travelling forward in time. if we travel very fast through space, we can decrease our rate of passage through time relative to a stationary observer. so you could travel in your spaceship for 10 years and come back to earth and it might be 100 years or more later. travel into the past is effectively the same as faster than light travel, and it's probably impossible for the reason that objects with mass can't travel at light speed.

Answer 5

There are a pair of methods that under the present rules of phsyics, a minimum of mathematically aloow time shuttle to ensue. One includes growing to be a sturdy wormhole, and the without delay pulling aside and bringing the "ends" of the wormhole returned collectively. The advent of the variety of wormhole and it susequent stream will require energies that fantastically outsrip something shall we produce regionally, and the maintinence of the wormhole will require forms of count that has on no account been considered to exist. the different includes the manipulation of huge, vast, vast cosmic strings. returned no cosmic string has ever been stated, and the energies required to bend it around some distance outstrip what we are able to do. Intersting in concept, not likely suited in prepare.

Answer 6

i think it is possible cause there is nothing impossible if scientists and talented people work real hard to accomplish this , but i think if the government finds out about this they are going to try to hide it so that it does not fall in the wrong hands and yes they will defiantly going to make the world a better place to live in.

Answer 7

HEY Stop
NO
its impossible .. its only possible in movies tho :-l
We can only control 3Ds , we wont be able to control the 4th D
i cant prove it to u .. but believe me , time cannot be stopped

:-j .. the govt would use it to prevent things and terrorist attacks , that sounds a good idea for a movie

Answer 8

Now, not possible and what future holds, we can't predict now. And no use in speculating what happens when time travel becomes a reality.

Answer 9

On theory yes if one can travel faster than speed of light.But currently,we havn't had anythin dat could travel at such rate.

Answer 10

Sorry to be a pain but, we travel through time all the time, every minute, each second of every day. We're always moving forward in time