If  we can travel back to the past but not change it, to WHEN woul you go and why?
372005
I would go back to see if some of the seven wonders of the world really existed.
303837
Time travel is possible when we travel forward not backward. IF you look to the history books there are no such thing of human come form the future. So that is the proof that has defined the theory that we can't go to the past. There are theory that we can move forward by using the method of speed. Once you increase the speed of travelling the time will change very fast, and you might be in the future. But to have that kind of machine to bring you forward needs a lot of discovery especially about the strenght of metal, fuel, speed, and a lots more. You can get the theory about speed from einstein. Whatever you want to know about it, you can get it there, BUT eventhough you learn about time travel, you won't get that technology while you still alive. Maybe you can use that information just for you knowledge. Not more than that.
1044156
Einstien came up with a theory which was by moving very quickly, beyond humans fathomable grip on speed, you can actually stop time and if faster then that, go BACK in time. crazy huh? well if its ever true, we wont know, cause no one in the future in their right MIND would ever want to go back in time to the 20th century. come on. why not stand in the crowd and watch jesus being stoned while carrying the cross or go back further to live amongst the first civilzation of man.
1163736
yes. everyone is a time traveller. in fact, even now you are travelling from a past to a future. the present is but a trasistory period of your journey.
59515
Time travel is actually 100% possible.  You're time travelling right now, the problem is that you cannot control how to time travel.  \n\nIf you had enough fuel on a spaceship that could go at 99% the speed of light, the time on the spaceship is slowed down dramatically, this is called time dilation, which means your biological clock also slows down, slowing your aging process.  If you come back to Earth by travelling 60000 light-years, you're only 40 years older then, but the Earth and everyone on it is 60000 years older.\n\nTime travelling to the past is currently not possible.
1068787
travel into the future is possible by einstein theory as one approaches the speed of light.  \n\nTraveling into the past is a different story though, access would have to be open from the past for this.  There is no way to create a portal to the past, someone from the past would have to create the portal to the future where the future person could pass.  \n\nIt is argued though that this would only open a door to another dimension and another universe independent of our own universe.  If you think about it, the fact that someone could 'travel' to the past is direct evidence that other parallel universes exist.  If you were to travel back into time history and events would inevitably be changed from occurences known to us in the present, therefore you must be in another universe.  \n\nAnother way to see the past is to create a large gravitational force bending space time such as a blackhole, and align it so that the light traveling from where you are would be bent back to a location where you could observe it.  This would be like viewing T.V. though, because you could have no interaction.
909079
Yes, it's possible but you would never be able to return from the future and you would have to travel close to the speed of light somehow.  According to Einstein's theories of relativity, if you travel close to the speed of light, time will slow down, so that hundreds of years could pass here on Earth while you travel at a fast speed.  So you would return to Earth in the year 3000 for instance at the same age as you are now, but you would never be able to travel back in time.  Time travel backwards is supposed to be impossible.
339701
Time travel occurs everyday with everyone.  Just sitting in front of the computer now I am advancing into the future at a rate of one second per second.  What the clock on the jet experiences is time dilation.  This simply means that for the clock on the Jet, time slowed down.  In this sense it is possible to travel into the future.  This would be done by travelling at extremely high speed.  This would essentially "fast forward" you into the future, but is a one way ticket as there is no way back.\n\nTime travel as a sci-fi concept (e.g Dr Who or Back to the Future) is not possible (as currently thought), as this would mean travelling into the past as well as the future.  There are some theories that could allow time travel into both the future and the past  However, in these theories, you could not travel futher back in time than the instant the time machine was built - the reasons for which are complicated and stop paradoxes from occuring!
577378
It's not possible physically. But, what is reality? it's whatever your mind see it as. It's more practical to take some drug and live in some hallucination, of a different reality, than to really go back physically to change the reality.\n\nWhy do u want to goto the past or future? do u want to change something in your favour? Your action would probably triggers a series of event that would again change what u tried to change, or if someone else does not like how u changed thing, they'd simply go back and change things again if time travel is at all possible. These people who does not have a time machine would eventually have one given infinite time to learn to make one and if time travelling is possible, they do indeed have infinite time. In the end, u would not be able to tell the outcome.\n\n\nThe easiest and laziest way to get a time machine is to give yourself one. Once u r done using it, travel back into time to your past and give yourself the time machine... which u got from yourself in the "past".
1003820
Depends. You want to go forward or back. \nI *cough* actually have an entire theory about time travel. \nAnd that is, that there can only be one of you in existence at a time. Thus- if you go forward your putting yourself in your future self's body. And if you go back your putting yourself in your younger self body.\nBut- if I'm wrong and quantum physics 'same thing in countless positions at the same time' is right. Then you can be in two places at once. Therefore time travel- where you keep the machine and keep yourself how it is now, is possible. Then... I have no idea how you would go about it.\n\nIf anyone tells you to plug in the toaster and stick a fork in where the toast is supposed to come out though. Don't do it. Them electrical burns hurt.
1103303
I would travel thru time
84170
the answer is - it depends - on a lot of things\n\nI hate to answer a question with a question but here goes ...\n\n- do you mean in theory or in practice ??? (in [einstein's relativity] theory it is possible to travel into the future - all you need to do is to go out into space for a while - the time here on earth will continue to progress at a normal pace while time for you will progress more slowly - when you come back you'll have essentially traveled into the future - not quite a time 'machine' but same effect
531076
Traveling forward in time is called "Day Dreaming"\n\nTraveling backwards in time is called "Reminiscence"\n\nWhy, we have this magnificent faculty of imagination that allows us to conceive of things that have yet not come. Time travel is going to be hard, we cannot reach anywhere near the speed of light and Time for some reason, just move in one direction - forward. We have never seen a broken vase collect it's broken pieces together to form a completely whole on its own. We have never experienced Time moving backwards.\n\nParallel universe, yes, nice concept. Would you consider the angels, demons, and the spiritual realm as a parallel universe or alternate universe? If there is a parallel universe, there would be a point or a place where the two can meet and if we can find this portal, we could perhaps slip into another world. But it is all just conjectures and no solid evidence today.
540063
i wouldnt change the past but go back to better the future.\ni wouldnt bring things with me but bring them back. because if you changed the past who's to say you exist anymore?\n\nif i could go back in time i would go to the last supper with jesus and bring back the holy grail to bring proof of jesus, \n\nwhen i was there i would also bring back the spear of destiny (used to puncture jesus' side) for it brought hitler into power and is made of pure evil, \n\ni would also bring back the voice recorded account of jesus' stand on homosexuality (and use the other 2 items as proof i did see him)(for the holy grail was never found and the spear of destiny seemed to disappear with hitler), \n\nand i would bring back the staff of moses for maybe its power may be used for good again, \n\nand video recording of the plagues and the miracles through moses. \n\ni would use these to bring peace to all the questions and the questioning.
1092955
First off, there's the famous Big Paradox:  Suppose you have a time machine, you go back 80 years and accidentally kill your grandfather before he meets your grandmother.  Whoops!  Now you'll never be born!   So you won't kill him, so he'll meet your grandmother and you'll be born and you'll kill him, so you'll never be born and ... See?  That represents a big problem right there, not just with your grandfather but with events in general.\n\nSecondly, as has been noted, if time travel were possible, don't you think that by now we'd have had visitors from the future?  (And no, I don't think they're sneaking around in disguise; why would they?)\n\nFinally: in the universe as we know it, we experience time in one direction only.  If you don't like the way a movie ends, you can rewind it and watch it again, but the ending won't change no matter how many times you do it, or how far you rewind before pushing 'play' again.  So, make the most of time as you move through it.  You won't be able to change it later, so enjoy it now and do things you'll enjoy revisiting in later years with your own 'internal' time travel -- memory.
1059670
we travel in time as it is just only at the speed of our life and planet the thing to do is to step up or slow down the speed of the process then you are in a time machine
1082095
Time travel to the future is theoretically possible.  Travel in space at near-light speed for a short time and a much longer period of time will have passed on Earth.  Or you could have yourself cryogenicly frozen (though I'd wait until they perfect the revival process) and see the future that way.\n\nIt would be a good thing to see the progress of mankind, but you may have a hard time fitting in.  Since there's no way to travel backwards in time, you would be stuck there.