Is the hypothesis of time travel realistic? Will time travel actually be possible in near future? And what is the concept of wormholes and black holes?
3 Answers
Time travel as we know it does not exist and will never exist.
Explanation:
Time travel will never be possible due to the fact that events in history would have to be repeated and that is not physically possible. Black holes are not a concept but a real thing, black holes are a singularity surrounded with something, we do not know what. The gravity in the center of a black hole is infinite and outside of the black hole itself gravity is so strong light cannot escape from it's grasp. Wormholes are a concept that in essence are gateways between two parts of space.
Time travel is not possible because in order to go into events from the past one needs to travel faster than the speed of light, ie, 299 792 458 m / s which is not possible due to the fact that more speed you gain, time starts stopping for you. Travelling faster than light is like trying to slow down a car that has already stopped.
I don't think that time travel can ever be possible because according to the law of nature nothing can travel at the speed of light.
Black hole is a region in spacetime wherein gravity is so strong that it curves into singularity, and once inside the event horizon, not even light particles can escape ( though this idea has been given the boot by hawking radiation )
Wormhole is like a shortcut through space time. It beats normal logic.
Hope this helps :)
PS check out " Brief history of time" and "The cosmic perspective".
A few thoughts...
Explanation:
Forward time travel is unavoidable, but the speed of travel depends on various factors including acceleration and gravity. Refer to Einstein's theories of relativity to find out how.
Backward time travel would seem to entail violation of causality, as is typically pictured with ideas like "what would happen if you prevented your own birth?".
This would however not be as much of an issue in the many worlds interpretation of quantum mechanics. In that model, reality is constantly branching. When we look back in time, we look back along one branch, but in the forward direction every probability happens in some universe. In such a model travelling back to the past of a branch that is not your own would not violate causality.
There are some models of reality that include wormholes, which act as a kind of shortcut between one part of spacetime and another. Some theoretical models of spinning black holes could cause wormholes. As far as I know, any such wormholes are quite fragile - collapsing the moment you try to convey information through them.
Black holes are very real, but do not seem to be very practical as much of a help in this matter. The extreme gravity does distort time, but not reverse its direction.
