Time travelling would be imposible, first off time is a context of the timezones created by man, and the universal magnetic field. speed of light is perplex to time. if one would try and go back in time he will be burned to death,why? light is made up of matter that is brought from the sun. and if you attempt togo back say 100 years. you are travelling though trillions of trillions of buring matters all compose of light. which would melt your skin going back at a fast speed say 700mph,.
You're traveling through time right now...as we speak. Thus forward time travel, yes, is possible. Furthermore, you CAN go faster into the future (as someone else described).
However, backwards time travel is not possible since it is logically not possible. I'm not saying that we simply don't know enough or don't have the technology or whatever. I'm saying that backwards time travel presents a logical paradox which means that it is mathematically IMPOSSIBLE to go back in time.
If you read the article there is a mistake (in my opinion) which is the "consistent causal loop". They use an example of a professor going into the future, getting a theorem, then teaching the theorem to a student...it just so happens that this student is the same person the professor stole the theorem from. The problem here is infinite regression. It works until you think about it:
If the professor got the theorem from the future student, then gave the student the theorem, then WHO actually came up with the theorem? From the student's perspective, the professor gave it to them...but the professor got it from the future student...but that future student got it from the past professor, who got it from the future student, who got it from the past professor, etc., etc. The creation of the theorem has no source--it's non-sensical.
Time travel is not possible for the simple reason that time doesn't exist. Time is a concept that only exists in the human mind, and we invented it to help us track the state of the universe. In the universe, events happen and the universe changes state continually. Once an event has happened, the universe can never be returned to the exact same state. In order to go back in time to yesterday, you would have to return the entire universe to the state it was in yesterday, and that is obviously impossible.
There is a way you could sort of travel into the future, and that is by travelling at a speed close to the speed of light. Time would slow down for you relative to everybody else. If you went on a cosmic voyage for say 100 years, you could theoretically come back and be essentially the same age while everybody else would have aged and died, and the world would be changed. You would see the future that you would not likely have lived to see. But this would not be your future. It would be your present. And you could never go back. Anyway, this is only a theoretical possibility and is not likely to ever happen because it is practically impossible to get close enough to the speed light to make it work.
In short, no. Time traveling goes against every universal law and physics. As Einstein stated many years (and proved through logical equations), nothing can go faster than the speed of light and the simple reason is that the faster you go, the more energy you need to accelerate and as you go faster, your mass increases but time goes slower because the ratio between your speed and the speed of time becomes closer and closer to 1 (but you can never reach the speed of light but you can get very close to it like 99.9999999999999999% of it) therefore time will pass much slower (and that's why you will age slowly compared to those who live on the Earth) and this is called Time Dilation. As I said, as you go faster, you will need more energy to accelerate and speed up and this will go on and on and on to a point that you will need an infinite amount of energy and because the amount of the energy in the entire universe is finite, even though extremely big but yet not infinite, then you will not reach it and therefore, you will NOT be able to time travel.
Even if you reach the 100% speed of light, you will not be able to travel to 'past' because the 'past' is travelling at the same speed as you. If you want to travel to 'past', you have to go faster than light. For example, if you be able to travel 10 times faster than light, you can send a signal to Jupiter, travel to Jupiter, wait for the signal to reach you and thus accepted the signal with delay as something which has come from future and because it is from 'future', then you will automatically be living in the 'past'. If there are living beings with signal receivers living next to one of the stars outside the solar system (I have forgotten its name), they can now listen to Hitler's 'live' speech :)
However, there is only one solution (still not 100% if actually feasible or not) and that is to bend space and bring two points closer to each other but no one knows how to do that (yet).
You should watch Stephen Hawking's Time Travel. It is an excellent video which explains time travel.
As you approach the speed of light, you age slower. So you can age 10 years while everyone else ages 20 (not real numbers, just guessing). I doubt you can go backwards.
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Time travelling would be imposible, first off time is a context of the timezones created by man, and the universal magnetic field. speed of light is perplex to time. if one would try and go back in time he will be burned to death,why? light is made up of matter that is brought from the sun. and if you attempt togo back say 100 years. you are travelling though trillions of trillions of buring matters all compose of light. which would melt your skin going back at a fast speed say 700mph,.
You're traveling through time right now...as we speak. Thus forward time travel, yes, is possible. Furthermore, you CAN go faster into the future (as someone else described).
However, backwards time travel is not possible since it is logically not possible. I'm not saying that we simply don't know enough or don't have the technology or whatever. I'm saying that backwards time travel presents a logical paradox which means that it is mathematically IMPOSSIBLE to go back in time.
Here are some example paradoxes that backwards time travel would raise: http://science.howstuffworks.com/science-vs-myth/e...
Edit:
If you read the article there is a mistake (in my opinion) which is the "consistent causal loop". They use an example of a professor going into the future, getting a theorem, then teaching the theorem to a student...it just so happens that this student is the same person the professor stole the theorem from. The problem here is infinite regression. It works until you think about it:
If the professor got the theorem from the future student, then gave the student the theorem, then WHO actually came up with the theorem? From the student's perspective, the professor gave it to them...but the professor got it from the future student...but that future student got it from the past professor, who got it from the future student, who got it from the past professor, etc., etc. The creation of the theorem has no source--it's non-sensical.
Time travel is not possible for the simple reason that time doesn't exist. Time is a concept that only exists in the human mind, and we invented it to help us track the state of the universe. In the universe, events happen and the universe changes state continually. Once an event has happened, the universe can never be returned to the exact same state. In order to go back in time to yesterday, you would have to return the entire universe to the state it was in yesterday, and that is obviously impossible.
There is a way you could sort of travel into the future, and that is by travelling at a speed close to the speed of light. Time would slow down for you relative to everybody else. If you went on a cosmic voyage for say 100 years, you could theoretically come back and be essentially the same age while everybody else would have aged and died, and the world would be changed. You would see the future that you would not likely have lived to see. But this would not be your future. It would be your present. And you could never go back. Anyway, this is only a theoretical possibility and is not likely to ever happen because it is practically impossible to get close enough to the speed light to make it work.
In short, no. Time traveling goes against every universal law and physics. As Einstein stated many years (and proved through logical equations), nothing can go faster than the speed of light and the simple reason is that the faster you go, the more energy you need to accelerate and as you go faster, your mass increases but time goes slower because the ratio between your speed and the speed of time becomes closer and closer to 1 (but you can never reach the speed of light but you can get very close to it like 99.9999999999999999% of it) therefore time will pass much slower (and that's why you will age slowly compared to those who live on the Earth) and this is called Time Dilation. As I said, as you go faster, you will need more energy to accelerate and speed up and this will go on and on and on to a point that you will need an infinite amount of energy and because the amount of the energy in the entire universe is finite, even though extremely big but yet not infinite, then you will not reach it and therefore, you will NOT be able to time travel.
Even if you reach the 100% speed of light, you will not be able to travel to 'past' because the 'past' is travelling at the same speed as you. If you want to travel to 'past', you have to go faster than light. For example, if you be able to travel 10 times faster than light, you can send a signal to Jupiter, travel to Jupiter, wait for the signal to reach you and thus accepted the signal with delay as something which has come from future and because it is from 'future', then you will automatically be living in the 'past'. If there are living beings with signal receivers living next to one of the stars outside the solar system (I have forgotten its name), they can now listen to Hitler's 'live' speech :)
However, there is only one solution (still not 100% if actually feasible or not) and that is to bend space and bring two points closer to each other but no one knows how to do that (yet).
You should watch Stephen Hawking's Time Travel. It is an excellent video which explains time travel.
Time Travel is NOT possible. Pure Science Fiction.
As you approach the speed of light, you age slower. So you can age 10 years while everyone else ages 20 (not real numbers, just guessing). I doubt you can go backwards.
I swear I time travel every time I read this question.
No.