if there's a TIME MACHINE in the future, why hasn't anyone returned to prove it?
155292
See my answer to the question "Is time travel a possibility?" especially the part about other universes
18327
If you would belive in the parallel universe theory\nthere is a possibility that the past exists in a \nanother parallel univerese.However if you would\nbelive in the space-time continum,the past would\nnot simply exist as would the future.But theoriticaly\ntime travel is possible is you consider slowing down\nthe rate of time advancing but this will not lead you to the past but it would take longer you to reach the future in your particluar reference of time\n,here relativity comes into picture and the solution is still not clear.
164691
According to Einstein, it's only possible to travel time to the future, although he never said that going back in time is impossible.\nTime slows down for you and your vechicle as you travel close to the speed of light (186,000 miles per second).  Anything outside is at normal time and speed obviously.\n\nTheoretically, if you travel 30 mins out into space at the speed of light and travel back to earth, you're only an hour old (by the way, at that speed, you've traveled an equivalent of six of our solor systems).  However, as you return to earth get ready to meet your great great grandson.\n***\nI don't know why.\nIf I did I'd own this freaking corporation.  *L*
502465
There is no such thing as time travel, it's a physical impossibility. The reason we haven't had any visitors from the future is because time travel simply cannot occur.
302761
Best Answer! \nThis is recorded fact, at the Grenwich university time museum.\nIt is said that you travel in time when you take a fast jet around the world and arrive back in the same spot. The nuclear clock was used to prove this.
916572
the problem is that history can not be proven. science deals with the now. right now we have fossils and bones. what does this mean? that somthing lived and died not that they evolved over millions of years. if the biologists knew anything about astronomy they would realize that the earth is slowing down (hence the leap second) and if somthing is slowing down that means it used to be going faster. and if you do the math on this billions of years ago the earth was going so fast that day and night were one and nothing could stand on its surface.\n\nlets think for ourselves and not let the government or our textbooks tell us what to beleive \ngalleleo along with almost every other inventor would have never made there discoverys had it not been for there mistrust of textbooks.
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!
705669
it depends on ones perception of time,the universe may have ended already,but we exist in a dimension that does not recognize it.perhaps the universe as humanity knows it will never end...
271055
We lack the proof, only the high probability that something exists in one of the trillion or so systems out there.  Have you noticed that with all the camcorders out there in the past 5-10 years that there's been a lack of UFO sightings...just my observation.
560353
Not we as humans, but scientists are working on the technology to send atoms back in time.  The logic to behind this makes no sense.  Here's part of an article I read once on the website Space.com:\n\nTaught in physics classes the world over, Albert Einsteins theory of special relativity holds that no object or information can move faster than the speed of light in a vacuum, or 186,000 miles (300,000 kilometers) per second. But NECs Lijun Wang says he created an experiment in which a light beam raced through a gas-filled chamber so quickly, it exceeded the speed of light by a factor of 300. Whats more, the light pulse appears to have left the confines of the chamber before it even entered a seemingly impossible occurrence according to theories of causality, which predict that causes must always precede their effects.\n\nSo, this possibly hints that the light is going back in time, but if this is what it means it violates laws of causality and sends quantum physics into disrepair.  \n\nTraveling to the past is impossible given our current views of the universe and physics.  However, if the universe isn't a universe, but rather a multiverse of infinite parallel universes we could jump to another universe that exists simulatneously at an earlier time.  This would not violate causality or the grandfather paradox (which is that if you could go back in time you could kill your grandfather  which would mean you would never be born to kill your grandfather).  YOu could kill your grandfather in another universe and you would never exist in that universe, but you would still exist because in your universe your grandfather had never died.
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.
493463
Yes I did. I built a "time machine" ___ years to perfect it. It took me ___ years. Of course there is no time, so you may have noticed that there are times which are not listed above. This proves time does not exist. I rest my case. And I would like to thank the academy for not revoking my birth certificate.\n\nMy first discovery was that there is no such thing as time.\nThat helped alot, because now, all the time it would take to invent a time machine didn't exist, so I would be able to have invented one already.\n\nI instantly realized that if you travel at the speed of light, time stops. Go faster than the speed of light, and you start going back in time. Therefore, go slower than the speed of time and you go forward in time. Make sense so far?\n\nSince time doesn't exist anyway, why figure out how to go faster than the speed of light. You are already there. And if you had an accident, while traveling that fast, surely your insurance wouldn't cover it and your speeding ticket would be astronomical, and I wouldn't be rich enough to pay it (wait a minute - if time is money, and there is no time, there is no money, so I can afford to speed again. See how great life is? (but if your lifetime is made of time, and there is no time, you are dead right now. That seems inconvenient. But I feel great if I'm dead right now. Maybe I've been worrying for nothing.\n\nI then remembered (my first step in going back in time) that the infinite Universe in which we live goes "out" forever. Since I, as a human being, go infinitely IN forever (no matter how small the piece of my, you could always cut it in half) and the inner-most in of infinity is already inside my body, and since there is no number bigger than infinity, everything is inside me already...all of infinity. I slowed down and realized that I don't need speed, time, life, money or insurance, to travel in time. Why, the electrons in every one of my atoms are already traveling at the speed of light and particles in them are going even faster. That should help too. \n\nViola! If there is no time, therefore I am already infinity years old, I don't have (but I could) go anywhere in time, because I have already been there, and there is here, and here is now, so there you go.\n\nI don't have to sell any of you my time machine. Each of you already has one. I wouldn't call it a time machine though, because there is no such thing as time (which is easy to prove by just picking up a phone in one country and talking to someone in another a few "time" zones forward or back, you are "time travelling" talking to someone in today or tomorrow (your choice) so you can make yourself time travel at will.\n\n"But I can't SEE the person I'm talking to on the phone" you might say.\n\nFine. Go out tonight and look at the stars. By the "time" it took light to travel to your eye from the star, thousands of "years" passed, so you are actually seeing them as they looked thousands of years ago...and, you are seeing those stars with eyes that "weren't even alive thousands of years ago. So you can see without eyes too.\n\nBut I guess the short answer would be "yes".
522139
I think we might have met,didnt you test the time machine was build by GIBBS?well i dont care what others say.but if you the same person,you,yourself witnessed who that guy time treavelled,it was not much,but if you can time travel few hours by this simple machine i guess more advanced people for sure they can do it,after all how do they get here from their star system,about john titor his predication about black hole was built by sers came true,didnt it?something like what 10 of his predictions?well people are afraid of unknown,but im sure you are the same person and have a lot of experince in time travel,yes it was true.
1126097
Currently there is no answer to this question.  Mankind will not know this until 1. We make contact with a time traveler or 2. We know ever thing there is to know about physic and the universe.  Time travel may be achievable but it is possible ; no civilization has be in existence long enough to figure out the solution.....If there are time travelers in the Universe now we might presume they would not make their presence know to us. We would be mere babies in comparison to their intelligence. So the answer is yes or no.
642499
The possibility is there,though we will never know the truth.It has been lost centuries ago.
143977
I would love to see time travel available, but I believe to go back and prevent a part of history would be wrong. It would change the future for everyone. I loved the TV show "Quantum Leap", but I always thought there was something wrong about changing history.
558181
I haven't.But.......\n\nTime travel has been a popular science-fiction theme since H. G. Wells wrote his celebrated novel The Time Machine in 1895. But can it really be done? Is it possible to build a machine that would transport a human being into the past or future? \nFor decades, time travel lay beyond the fringe of respectable science. In recent years, however, the topic has become something of a cottage industry among theoretical physicists. The motivation has been partly recreational-time travel is fun to think about. But this research has a serious side, too. Understanding the relation between cause and effect is a key part of attempts to construct a unified theory of physics. If unrestricted time travel were possible, even in principle, the nature of such a unified theory could be drastically affected....