2006-10-03 16:47:06 · 30 answers · asked by micky finn 1 in Science & Mathematics ➔ Other - Science
As far as we know, it is not.
Take a piece of paper and crease it. Can you change it's state back to uncreased?
2006-10-03 16:48:58 · answer #1 · answered by nora22000 7 · 1⤊ 0⤋
There isn't really any reason in Physics why you couldn't travel back in time but if you did you would end up in deep space as the Earth would have moved a considerable distance even if you went back a few hours.
There are also issue about the grand father paradox (IE you could be you own father) which causes loads of issue.
It you believe the multi universe interpretation of quantum mechanics (which I don't) it is possible to travel back in time to another universe as long as you don't arrive before it branches away from your own universe.
By the way you are travelling forwards in time now and it is possible using relativity to slow you rate of movement forward in time, so in that context it is possible to travel forwards in time but going backwards which is what I'm talking about above is a bi trick and I think will turn out to be impossible.
2006-10-07 11:39:42 · answer #2 · answered by Mark G 7 · 0⤊ 0⤋
In theory as you aproach the speed of light time slows down, so if you travelled at the speed of light for a while then I guess to others you would not have aged while they have so could kind of claim thats time travel. Either that or 1 kick ar*se anti ageing product!!
2006-10-03 16:52:14 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Time is a relative state. As you increase speed, although time remains constant for you, the world surrounding you slows down.
The experiment was done such that 2 atomic clocks were syncronized. One was loaded into a plane and flown around the world. The clock that went on the trip was slightly behind the one that was not.
According to Einstien and his crazy theoretical physics theories, if you exceed the speed of light you can actually begin to move time relative to yourself, in reverse. Of course that is if you can stop from becoming pure energy.
2006-10-03 16:53:44 · answer #4 · answered by quelforlor 2 · 0⤊ 0⤋
In order to time travel, you would have to travel faster than the speed of light. Which is impossible. For now. No scientist beleives time travle will ever be possible- but we cannot see what the future will bring.
2006-10-03 16:58:41 · answer #5 · answered by person 3 · 0⤊ 1⤋
YES. and that is who is visiting us in there ships people see all the time and other creatures from beyond..Einstein said it was possible, bend space, travel faster the the speed of light,ow yes it done all the time at sometime.
2006-10-03 17:17:13 · answer #6 · answered by Anonymous · 0⤊ 0⤋
I do not think it would be possible, for the simple reason that time would have to be always repeating tiself in order for us from the furture to go back to the past, I think that you need to cut from the movies and think a little more logically, but I to have wondered this when I was younger.
2006-10-03 16:49:07 · answer #7 · answered by artistmartista 1 · 0⤊ 0⤋
you can not travel back in time but it is possible to slow it down.
While traveling at light speed time slows down to where one year at light speed is about 20000 earth years
2006-10-03 16:57:38 · answer #8 · answered by Joseph M 2 · 1⤊ 0⤋
If you could go as fast as the speed of light, time travel would be possible. To bad you can't go as fast as the speed of light thogh.
2006-10-03 16:51:07 · answer #9 · answered by Anonymous · 0⤊ 0⤋
You have received a lot of NO answers but Einstein's theory of general relativity predicts the answer is YES. This theory describes the concept of space-time and the mathematics which describes a black hole shows that black hole has two openings and is a tunnel through space-time.
2006-10-03 21:39:31 · answer #10 · answered by Anonymous · 0⤊ 0⤋
I say yes it's possible,and maybe some people have discovered it,but the rest of the world doesn't know about it yet.Who knows,anything is possible.
2006-10-03 20:03:10 · answer #11 · answered by sweetbunny 2 · 0⤊ 0⤋