Time travel: possible or not? Leave arguments.

Question

ok so heres what im going to basically skim down on...

in my opinion, time travel is "unlikely" or impossible at any given time, there are 2 main reasons for this:

1. Time is manmade, it is a thing we created to order our events to stop chaos, it is mandmade and has no capacity, therefore nothing can travel in it.

2. some people say that black holes reverse time with the force of sheer gravity, nobody can use this as an argument because we will never know if thats true because if anything goes into it, its not coming out

theres probaly many more reasons, but im going to leave it at that. comment please

Answer 1

Time travel is not possible with present technology, or any in the forseeable future.

"Time is manmade" where did you get that idea? false.

Answer 2

Don't remember where I got this from but it's from somewhere:

If time travel was possible, wouldn't we be seeing people from the future presently? Or at least some recording of it?

Answer 3

no. Here's a paradox for you. Could you kill your grandfather when he was a baby if you traveled back in time? If you killed your grandfather you wouldn't be able to be born therefore not being able to travel back in time and kill your grandfather.

to previous comment: I think he means time is only a perception.

Answer 4

It's possible to "move" in at least one direction, but to move "back" in it would require that previous events be undone, while the events resulting in you were not affected which is basically contradictory so you can't, basically, and still have the matter and energy forming you be in the state required to constitute "you", instead of being spread in varying locations dependant upon the time you are travelling back to, if the matter and energy used to form you was not in it's location/state at the "you-less" earlier time, then the universe with you still "you" would be different from the universe at the earlier time, when you were not "you".

If you imagine a mini-universe containing two objects which are interacting (say like two stars orbitting each other steadily) and you are one of those stars and you decide at time T2 you are going to travel back in time - which means that all the objects in the system, except that which constitutes you, have been set back to the state they were in at the earlier time of T1, but that which constitutes you has not been, then almost all events post-T1 in which you are able to observe without having been regressed to your own state at time T1 will diverge from the events which occured post-T1 resulting in the particular state of the universe you were in at time T2 (the time you originally chose to time travel at with its associated universe-state).  There will be a period in the system wherein some events post-T1 will not be affected by this change, but the divergence "wavefront" will spread out to the locations in question eventually.

In the case of this mini-verse then the other star will cease it's orbital motion around you and it's previous centre of mass and has thus diverged from it's previous course of events once the change in gravitational field reachs the other star ... but you chose to travel back in time at T2 when the other star had progressed in events between T1 and T2 as if you had been there to affect it.

Answer 5

Those sound like pretty good ideas you've come up with.  You do want to give it the kind of thought like Einstein did when he came up with Special and General Relativity theories.

Basically one of his premises comes down to time is based on what we measure or observe.  We observe a star exploding now, but we know it happened a long time ago...  but we can't say that has anything to do with time travel, but rather the traveling of light at its very fast but finite speed.

Before I go off the deep end I'll quit and let others comment.

Answer 6

if someone in the future made a time machine, they'd most likely visit the past and give it to us, correct?

and if time travel WERE possible, the things the time traveler did already would have happened. it would have just seemed natural.

(does that make sense?)

so, no.

Answer 7

I've read that to be able to travel in time you must reach the speed of light

& when anything gets to this speed it turns to energy & I think it's difficult to be returned again into matter

so I think time travel is impossible  

Answer 8

No... the closest to time travel we can have is to see the past....

You know about stars and galaxies that are one million light years away? Well, that means that it takes for light about one million years to travel and with simple math u can get the distance in metres or inches whatever you want. Now light is the FASTEST WAY OF INFORMATION so when you se a galaxie that is one million light years away it means that you are watching the galaxy as it was one millions years ago so technically your are seeing the past.

So it would be posible to send a beam of light from earth to a blackhole for it to bend over it, then the light comes back ath the earth and the future people (lets say a thousand years a head) will see the past but You wont travel... is not nessarily travel, more like live for a long time

About what Marwan said... Einstein said that it was impossible to reach the speed of light because the energy required lost in the resistance is greater than the energy needed to accelerate and therefore you would need a infinite amount of energy, so too bad we'll dont get to what happen to mass when it gets to the speed of light, although Einstein prooved/demonstarted that mass shrinks as speed increases and time slows down as speed increases (twin astronautes, the one in space looks and is technicaly younger).

when reaching the speed of light time doesnt move so you would need to go faster than speed of light which is impossible as Einstein also said its impossible. BUT DONT TAKE MY WORD! It seems that the universe is exanding at a faster speed than the speed of light! so there is still hope!

O yea... time is NOT man made

Answer 9

in my opinion no