Does time travel like a plasma?
912552
No...\nI don't know what it would be but I would not guess a plasma...
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.
938858
YES! Time travel is possible. For example, an object traveling at high speeds ages more slowly than a stationary object. This means that if you were to travel into outer space and return, moving close to light speed, you could travel thousands of years into the Earth's future.\n\nNewton's most important contribution to science was his mathematical definition of how motion changes with time. He showed that the force causing apples to fall is the same force that drives planetary motions and produces tides. However, Newton was puzzled by the fact that gravity seemed to operate instantaneously at a distance. He admitted he could only describe it without understanding how it worked. Not until Einstein's general theory of relativity was gravity changed from a "force" to the movement of matter along the shortest space in a curved spacetime. The Sun bends spacetime, and spacetime tells planets how to move. For Newton, both space and time were absolute. Space was a fixed, infinite, unmoving metric against which absolute motions could be measured. Newton also believed the universe was pervaded by a single absolute time that could be symbolized by an imaginary clock off somewhere in space. Einstein changed all this with his relativity theories, and once wrote, "Newton, forgive me."\n\nEinstein's first major contribution to the study of time occurred when he revolutionized physics with his "special theory of relativity" by showing how time changes with motion. Today, scientists do not see problems of time or motion as "absolute" with a single correct answer. Because time is relative to the speed one is traveling at, there can never be a clock at the center of the universe to which everyone can set their watches. Your entire life is the blink of an eye to an alien traveling close to the speed of light. Today, Newtonian mechanics have become a special case within Einstein's theory of relativity. Einstein's relativity will eventually become a subset of a new science more comprehensive in its description of the fabric of our universe. (The word "relativity" derives from the fact that the appearance of the world depends on our state of motion; it is "relative.")\n\nWe are a moment in astronomic time, a transient guest of the Earth. Our wet, wrinkled brains do not allow us to comprehend many mysteries of time and space. Our brains evolved to make us run from saber-toothed cats on the American savanna, to hunt deer, and to efficiently scavenge from the kills of large carnivores. Despite our mental limitations, we have come remarkably far. We have managed to pull back the cosmic curtains a crack to let in the light. Questions raised by physicists, from Newton to Kurt Gödel to Einstein to Stephen Hawking, are among the most profound we can ask.\n\nIs time real? Does it flow in one direction only? Does it have a beginning or an end? What is eternity? None of these questions can be answered to scientists' satisfaction. Yet the mere asking of these questions stretches our minds, and the continual search for answers provides useful insights along the way.
1113547
I have done time travel. Evertime I come back to California from Japan. I leave around 16:00 in Japan and get home around 09:00 . Sounds like time travel to me.
50535
OK, first fo all Mr cliffx has it backwards.  As you continue to acellerate tworads the speed of light time will slow down for you and stay normal for everyone else.  Thus at that speeds you could travel 10000 lightyear in only 1 year, your lifetime, but thousands of years could pass on earth.\n\nIt has been theorized that time travel is posible but you could not simply accelerate to that speed.  Even if we could travel that fast the economical need would be currently beyond what any country has, even if they put all there funding into that one project.  but I am getting off the subject.\nOne theory is to travel into a black hole.  The gravetational field in a black hole is so strong that it has been theoryzed that even time cannot escape.  Thus if we were able to travel into a black hole we could use the captuered time there, so to speak, and transverse the timeline.\n\nThen there are ideas of actually traveling on light waves, lasers, to allow us to travel to the speeds necisary.  Of course then we could only travel to the time of how long that peice of machinery is on.  Also we would have to convert ourselvesinto an electrical signale, data (essicially transport), which would then bring up the promblum of measuring matter without moving it and blah blah blah.\n\nSummery, Yes it is possible to travel through time.  We just do not havet he knowledge and/or technology to do it yet.
56785
Yes, time travel is possible. :)\n\nIf you put a person in a rocket that can accelerate up to near light speeds on a round-about trip, when this guy comes back, he'd have aged much lesser than the guys who sent him. So he has travelled forwards in time.\n\nTravelling back in time is also possible. Oscilatting in time is possible. Time statis is also possible. All if we imagine a universe that has only a few elementary particles.\n\nHow? Well imagine a universe that has only a pendulum that swings back and forth. Now, we, as observers of this pendulum, can make the following observations, all different, and all "correct"\na. The pendulum is swinging back and forth as time advances\nb. The pendulum swings forth, then the direction of time reverses, and the pendulum goes back in time and swings back\nc. The pendulum is swinging forth and back as time retreats\n\nWhich of these is correct? We can't answer that question. So we can choose any one - it doesn't matter. These three are just different ways of looking at the phenomenon.\n\nYou may also want to read up about Feynman's diagrams
39733
umm...either i'd say that you must have copied the history channel, you are insane, or you perhaps found a way to go faster than the speed of light.\n\nsupposedly that would happen if you went that fast.  time slows the faster you go, and as you near the speed of light it virtually stands still, so if you go faster, then you start heading back in time.\n\ni doubt that you figured out a way though, so i'd go with you being insane if you truly believed that you could do visit ages past in person.
786311
You can travel to the past but you can not travel to the future BECAUSE it did not occur yet.\nCheck the latest Physics web sites on this topic of time travel
222343
you can travel to the future but not the past, the closer you travel to the speed of light the faster the time goes by on the outside. I once knew how this worked but can't rememeber now.\n\nIn order to travel through time, one must travel at the speed of light, or at least at speeds very close to the speed of light. The problem is, as you mention, that it is not possible to accelerate something up to the speed of light. This comes from the theory of special relativity. In that theory, Einstein has shown that as something accelerates and travels at great speeds its mass increases. And the larger the mass of the object, the harder it is to give it a push to make it accelerate some more. So when the speed of the object gets really close to the speed of light, its mass becomes almost infinite making it impossible to actually give it the speed of light (or speeds faster than the speed of light). \n\nBut you don't need to travel exactly at the speed of light to "travel to the future". This also comes from Einstein's special relativity. When things travel at speeds close to the speed of light, time slows down. For example, if you were travelling for 10 years in a spaceship that could go at 95% the speed of light then 32 years would go by for the people that stayed on Earth. So in that sense you could say that you have traveled in the future. However we do not have the means to accelerate our space shuttles to speeds even close to that. The space shuttle travels at about 17,500 miles per hour which is 40,000 times slower than the speed of light. At that speed, an astronaut would have to travel a billion years in his space ship in order to jump one year in the future!
114656
It's not necessarily impossible according to theory, but given our current technology, it's out of the question.  There's a lot of trouble with time travel theory, including multiple paradoxes.\n\nThe most famous paradox is, of course, the grandfather paradox.  It goes something like this: One day, after you've built your time machine, you decide to travel back into the past to shoot your grandfather before your father is born.  Here is the major paradox, if you suceed in killing your grandfather, you couldn't be born to go back and shoot him.  Just as well, the conditions required for you to shoot him couldn't exist and thus he lives.\n\nStill on the 'travel back in time to shoot grandpa' string, several other things could happen as well.  You could be transported to an alternate timeline, similar to ours, but not ours, and whatever you do there doesn't affect anything in our time line.  You could go back and try and kill your grandfather, but you are thwarted in every attempt, which tends to imply some sort of destiny or grand scheme.  You could try to go back in time but are ripped to shreds because every fragment of your being wants to be in its natural time.  There's a million and one other things that could happen.\n\nThat, I believe, is not necessarily answering your question, though.  Time itself is not understood by physicists even now.  What it is, no one is quite sure!  (However, I'm fairly certain time is related somehow to mass.)  One thing that's always for certain is time moves forward in a very linear fashion, cause followed by effect otherwise called casaulity.  I can't say one way or another why exactly we can't go back in time and I won't say it's not possible, some theories say it is.\n\nHowever, I believe Stephen Hawking offered up the best proof against time travel to date: Wouldn't there be time tourists from the future visiting us if time travel was feasible?
381508
Think about what time traveling to the past means. It means that the entire universe except the time traveler is in a previous state. Now, for the time traveler, his time is still moving forward. He is older in the past after his journey than he was before his journey. \n\nSo, you have an entire universe one way and our traveler another. Since there was no past that existed that had his time traveler self in it, where has he gone? What is more reasonable is a time traveler experiment you can do yourself  by sending a smaller part of the universe into the past and watching that as you move foreward. Sound weird? Well, you can do it by resetting your computer. It goes into a past state and you keep moving foreward. This sort of time travel sounds like a cop out but it is just what is generally described on a smaller scale. That is, the entire universe but the traveler gets re-set to a previous condition.\n\nI know this answer doesn't satisfy the mystery feeling one gets with the time traveling notion, but it's what we really mean.
711667
Yes and no. Plasma, in physics, is simply ionized gas. "Ionized" means that at least one electron has been dissociated from a proportion of the atoms,particle or molecules. The free electric charges make the plasma electrically conductive so that it responds strongly to electromagnetic fields.\nLightning would be and is plasma because lightning is basically charged particles flowing through the air. As it travels, it charges the air, and turns it into plasma.\nFire is just a form of energy that is not known to conduct electricity. Fire is not a form of plasma.
281323
We live in a four-dimension universe, the fourth dimension being space-time. Time travel is THEORETICALLY possible. Just be careful if you go too far back in time and accidentally kill your father. Think about it!\n\nGod is spelled B-I-G B-A-N-G\nPBrax@netscape.com
848166
I think there is a difference between *seeing* past events--like looking at the 8-minute-old light from the sun--and time travel.  Time travel, as it is portrayed in novels and movies, involves the ability to actually be in the past or future, and I cannot see how that is possible.\n\nTo begin with, imagine going back to your own childhood.  You enter the house where you grew up and have a conversation with the kid you used to be. There you are, in your old kitchen, having a conversation with . . . yourself.  Do you see the probem?  There are TWO of you, the young child that you were and the adult that you are now, both together.  If you cannot accept the possibility of another person, or a billion other people, all of whom are you--just as much you as the person reading this answer--then time travel can't exist.\n\nNow consider a further possibility.  You travel back in time to the kitchen where your great grandfather was a boy.  Maybe that was 100 or 120 years ago.  But this time, instead of having a conversation with the boy version of your great grandfather, you kill him.   He never becomes a father to your grandfather, so your grandfather is never born.  Obviously, neither is your father ever born, nor, of course, you.  But if you were never born, who is it who just killed your great grandfather?  And, while we are at it, how can you be here?\n\nBottom line:  Just as a recording of an old TV news show can tell us what happened last year, light traveling through space may provide us with a record of what went on 8 minutes or 8,000 years ago.  But it is not time travel, which is impossible.\n\nGood luck!!
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.
39192
Time travel is to travel to any point in the past or future. Ideas of time travel have existed for centuries, but when Albert Einstein released his theory of special relativity, he laid the foundation for the theoretical possibility of time travel. As we all know, no one has successfully demonstrated time travel, but no one has been able to rule it out either. It turns out that, in some sense, we are all time travelers. As you sit at your desk, doing nothing more than clicking your mouse, time is traveling around you. The future is constantly being transformed into the past with the present only lasting for a fleeting moment. Everything that you are doing right now is quickly moving into the past, which means we continue to move through time. To learn about the concept of time and the different theories surrounding the viability of time travel, you can visit this site: http://www.howstuffworks.com/time-travel.htm
11078
Yes, but at a much slower rate than humans that are stationary or travelling much more slowly (i.e. life here on earth).\n\nSo if a human being went on a trip to the next star at the speed of light and returned to earth, it will feel to him as if he's gone forward in time by hundreds or thousands of years.