According to the book "How to Build a Time Machine" by Paul Davies it is possible, though you would have to be able to harness the power of a black hole to make it happen, which is beyond our technological ability.
Time travel into the future is definitely possible with special relativity. If you blast off from the earth in a rocket and quickly approached a velocity near the speed of light, your time would move slower than earth's time. The laws of physics prevents you from moving the speed of light, but it's possible to closely approach the speed of light. If your rocket could move sufficiently close to the speed of light, you could spend 10 minutes in your rocket and then come back to the earth ten years into the future. The faster you go, the further into the future you can travel. If you go fast enough, you could even witness the end of time, the end of the universe. Of course, our current technology is insufficient to get large objects, like humans, moving anywhere near the speed of light.
As far as I know, nobody has come up with a way to travel into the past. But the interesting thing is, the fundamental laws of physics are invariant under time reversal. In other words, physics does not prohibit traveling into the past. It may be possible!
According to the equations of Albert Einstein's general theory of relativity (the best theory of time and space we have), there is nothing in the laws of physics to prevent time travel. It may be extremely difficult to put into practice; but it is not impossible.
Time could also be an illusion, just because we know it as flowing in one direction all the time....is it really?
No, it sounds good but from an application of physics it is not. The idea of "warping" time by folding on itself is a theory but nothing more. It is more likely that we will find a way to turn off gravity than to travel through time.
Answers & Comments
Verified answer
According to the book "How to Build a Time Machine" by Paul Davies it is possible, though you would have to be able to harness the power of a black hole to make it happen, which is beyond our technological ability.
Time travel into the future is definitely possible with special relativity. If you blast off from the earth in a rocket and quickly approached a velocity near the speed of light, your time would move slower than earth's time. The laws of physics prevents you from moving the speed of light, but it's possible to closely approach the speed of light. If your rocket could move sufficiently close to the speed of light, you could spend 10 minutes in your rocket and then come back to the earth ten years into the future. The faster you go, the further into the future you can travel. If you go fast enough, you could even witness the end of time, the end of the universe. Of course, our current technology is insufficient to get large objects, like humans, moving anywhere near the speed of light.
As far as I know, nobody has come up with a way to travel into the past. But the interesting thing is, the fundamental laws of physics are invariant under time reversal. In other words, physics does not prohibit traveling into the past. It may be possible!
According to the equations of Albert Einstein's general theory of relativity (the best theory of time and space we have), there is nothing in the laws of physics to prevent time travel. It may be extremely difficult to put into practice; but it is not impossible.
Time could also be an illusion, just because we know it as flowing in one direction all the time....is it really?
No, it sounds good but from an application of physics it is not. The idea of "warping" time by folding on itself is a theory but nothing more. It is more likely that we will find a way to turn off gravity than to travel through time.
No.