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Real Time Travel Is Possible – But Probable?

August 21, 2007 By Sam Sloan 4 Comments

Time Travel Machine Outlined

A new concept for a time machine could possibly enable distant future generations to travel into the past, research now suggests.

timetravel_wormhole.jpgUnlike past ideas for time machines, this new concept does not require exotic, theoretical forms of matter. Still, this new idea requires technology far more advanced than anything existing today, and major questions remain as to whether any time machine would ever prove stable enough to enable actual travel back in time.

Time machine researchers often investigate gravity, which essentially arises when matter bends space and time. Time travel research is based on bending space-time so far that time lines actually turn back on themselves to form a loop, technically known as a “closed time-like curve.”

“We know that bending does happen all the time, but we want the bending to be strong enough and to take a special form where the lines of time make closed loops,” said theoretical physicist Amos Ori at the Technion-Israel Institute of Technology in Haifa. “We are trying to find out if it is possible to manipulate space-time to develop in such a way.”

Many scientists are skeptical as to whether or not time travel is possible. For instance, time machines often are thought to need an exotic form of matter with so-called “negative energy density.” Such exotic matter has bizarre properties, including moving in the opposite direction of normal matter when pushed. Such matter could theoretically exist, but if it did, it might be present only in quantities too small for the construction of a time machine.

Ori’s latest research suggests time machines are possible without exotic matter, eliminating a barrier to time travel. His work begins with a donut-shaped hole enveloped within a sphere of normal matter.
“We’re talking about these closed loops of time, and the simplest kind of closed loops are circles, which is why we have this ring-shaped hole,” Ori explained.

Inside this donut-shaped vacuum, space-time could get bent upon itself using focused gravitational fields to form a closed time-like curve. To go back in time, a traveler would race around inside the donut, going further back into the past with each lap.

“The machine is space-time itself,” Ori said. “If we were to create an area with a warp like this in space that would enable time lines to close on themselves, it might enable future generations to return to visit our time.”

Intrigued? Then keep reading this fantastic article from Charles Q. Choi at LiveScience.

Filed Under: Science News

Comments

  1. Paul bryant says

    August 29, 2007 at 8:03 pm

    The experiment that was done where to atomic cesium clocks which were in sync and would not vary and would click in time exactly and then they put one on the fastest military jet and one stationary. The test proved conclusively that slowing down of time is possible even though it was only by the very smallest amount when the clocks were brought back together the one from the jet was beating slower.
    I prefaced with the above to say this: Instead of trying to prove one can go back in time why not study more of the KNOW ability to slow time down or in effect travel into the future. I think it may even be possible with today’s technology to create a time machine which in effect would take one into the future. In other words a person could say go 10 years into the future but only age a year or less.
    I know this doesn’t sound like much but just think about it this way. A person with a terminal disease could say travel a hundred years into the future and only age a few weeks. However would anyone want to travel into the future?

    Reply
  2. Fwyginond says

    November 27, 2008 at 5:30 am

    That’s a good point. It could be hostile or non-existant.

    Reply
  3. timc1998 says

    July 28, 2009 at 4:41 am

    maybe they could create a machine that shows what the future/past that you want to go to is like so if there is an armageddon you just dont go that far into the future and if its close you could go back in time so you life your full life

    Reply
  4. malcolm roach says

    December 11, 2009 at 5:31 pm

    i would like for u if possible to send me as much information as possible i would like to learn as much as possible…

    Malcolm Roach
    Mingo Job Corps Dorm 1
    4253 state highway T
    Puxico, MO, 63960

    thank you

    sincerley yours”
    Malcolm Roach

    Reply

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