MIT quantum computing scientists believe that they may have discovered a non-paradoxical way to travel back in time (paradoxes being things such as the grandfather paradox) using methods of postselection and teleportation. Postselection is a theorized method of manipulating the quantum states of certain particles in a centralized section of space time, this method makes it possible to determine a particles quantum state in the past. Teleportation is obviously the transport of one object in one area of space to another almost instantly (that is, depending on which method of teleportation you use; http://news.discovery.com/tech/teleportation-quantum-mechanics.html http://en.wikipedia.org/wiki/Teleportation ) and the original article: http://www.telegraph.co.uk/science/7904712/Quantum-time-machine-allows-paradox-free-time-travel.html -ZeD
So it's not paradoxical. But it's still impossible. They don't even have any IDEA how to make it, they just said that if you combine one thing we can barely do with one thing we'll never be able to do, we could theoretically do something that we can NOT do, and will not be able to do. It's not a "machine", it's hardly even a theory. Also, with their statement about paradoxical situations being impossible, no time machine would be paradoxical. And that part seems the most legitimate bit of the whole thing. Hope they figure gravity out, though.
Time travel is already well documented, such as the case of the couple who slipped back to the 1900s in France while on a holiday, it is simply that so far we are unable to control it...
I've heard it theorized that if one were to travel back in time (I personally don't think it is possible) and were to say kill your grandfather, or meet and fall in love with your mother that along with existing at that moment in a different TIME, you would be simultaneously be existing in a parallel dimension so technically there would be no paradox. Michio Kaku has a really good clip addressing the paradoxes of time travel on youtube. If I were savvy enough to imbed the video , I would.
I explained gravity in another thread somewhere, it is the repulsion of space through the centrifugal force of energy within an atom. It's also why galaxies are disc shaped. The other stuff about quantum state TIME travel is fucking nonsense.
We shouldn't even be researching it. Its dangerous to fuck around with the past plain of reality. Time is a man made concept. You cannot travel back in 'time'. I seriously doubt that we will ever figure it out. Now it is totally possible to travel FORWARD in time. This is confirmed by physics and mathematics alike. It isn't matched by our current technology, but it is very possible to travel 1000's of years forward in time with the proper space ships, speed requirements, and technology to keep the astronauts alive during the lengthy flight, but even then we're all technically current time travelers. We're all traveling to the future together. That's one of the few things that make every single one of us the same. On a more humorous note... https://www.youtube.com/watch?v=HtJgTPVoggY"]YouTube - The Worlds First Ever Forward Time Traveller
You should read The Time Traveler's Wife (and there was supposed to be a movie). It features a man who's occasionally forced into time-travel trips, very often back into his own past, and especially at times that are important to him emotionally. For instance, he witnesses his mother's death in a car crash several times, at different "ages" in his own life. But what makes this avoid the paradox is that however much he tries to prevent the tragedy from happening, something makes him fail. What happened in the past really happened, and you can't stop it.
do you think 'time' could just be the relation between space and light...i mean as far as our concrete conception of it goes...i've never heard of the couple in the 1900's...but i have heard of the positron being mathematically identical to electron just reverse one dimension...where could i read about this do you know their names...