Why does time seem to flow only in one direction?
Answers
Travel faster than the speed of light. ... At the velocity of light, if you were somehow to reach it, your mass will be infinite and it will so require infinite force to push you, so no going beyond that speed. This is the reason time flows in a single direction.
Time flows slower in areas of high gravity, and also when you are travelling close to the speed of light. But that is the speed of light, can you change it's direction.
Well theoretically, you can
1. Make a source of gravity greater than infinity
2. Travel faster than the speed of light. (At the speed of light, time stops for you and should reverse if you travel any faster).
The second option seems possible, just pack enough fuel and keep accelerating, until you reach the speed of light, but we are forgetting another very important result of the special theory of relativity :
Mass is relative too.
Mass of a body changes with the change in it's velocity. The faster you travel, the more heavy you get, and the more difficult it is to push you. (since a = F/m)
Thus, as much fuel as you pack you will never reach the velocity of light.
At the velocity of light, if you were somehow to reach it, your mass will be infinite and it will so require infinite force to push you, so no going beyond that speed.
This is the reason time flows in a single direction.
Scientists believe that the end of the universe will be the big crunch, i.e. the expansion of the universe will stop and it will start collapsing. We know time and space began with the big bang, if space is collapsing, time will too. That is, then everything will happen in reverse, time will reverse it's direction, and one day i will be pressing these keys on the keyboard to delete them, turn onto a baby in 19 years and eventually, the universe will be point, only to start again as the big bang and the same events unravel again.