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Apparently, a wormhole is our best bet for a time machine

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LiveScience speaks:

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Though wormholes have never been proven to exist, these theoretical passageways through space-time are predicted by Einstein’s general theory of relativity.

… astrophysicist Eric W. Davis, of the EarthTech International Institute for Advanced Studies at Austin, argues that it’s possible. All you need, he says, is a wormhole, which is a theoretical passageway through space-time that is predicted by relativity.

“Time machines are unavoidable in our physical dimensional space-time,” David wrote in his paper. “Traversable wormholes imply time machines, and [the prediction of wormholes] spawned a number of follow-on research efforts on time machines.”

However, Davis added, turning a wormhole into a time machine won’t be easy. “It would take a Herculean effort to turn a wormhole into a time machine. It’s going to be tough enough to pull off a wormhole,” he told LiveScience.

That’s because once a wormhole is created, one or both ends of it would need to be accelerated through time to the desired position, according to general relativity theory. More.

Okay, okay, so we can’t go back in time twenty minutes and not be late for work or forward in time to cash our paycheque on Friday and make it back for today’s rent.

So, like, why does anyone care? Is this question of time travel in the same league as: If a tree falls in the forest, and there is no one around to hear it, does it make a noise? Fun but … Just wondering. Thoughts?

Of related interest, Anton Zeilinger's group, who is arguably almost without peer as far as breakthroughs for quantum mechanics go, has this video,,, Dr. Quantum in Flatland https://www.youtube.com/watch?v=takn4FPkId4 ,,,on their website: http://vcq.quantum.at/outreach/multimedia.html bornagain77
Here is the 'official' music video of the preceding song: Love & The Outcome – “He Is With Us” http://www.youtube.com/watch?v=qYLoigK4WSI bornagain77
as to:
these theoretical passageways through space-time are predicted by Einstein’s general theory of relativity.
Actually, the true story is much more nuanced,,
THE GOD OF THE MATHEMATICIANS - DAVID P. GOLDMAN - August 2010 Excerpt: ,,Gödel produced what may be the most damaging critique of general relativity. In a Festschrift, (a book honoring Einstein), for Einstein's seventieth birthday in 1949, Gödel demonstrated the possibility of a special case in which, as Palle Yourgrau described the result, "the large-scale geometry of the world is so warped that there exist space-time curves that bend back on themselves so far that they close; that is, they return to their starting point." This means that "a highly accelerated spaceship journey along such a closed path, or world line, could only be described as time travel." In fact, "Gödel worked out the length and time for the journey, as well as the exact speed and fuel requirements." Gödel, of course, did not actually believe in time travel, but he understood his paper to undermine the Einsteinian worldview from within. http://www.firstthings.com/article/2010/07/the-god-of-the-mathematicians
and Godel now has support that time travel is not possible from General Relativity,,
Physicists continue work to abolish time as fourth dimension of space - April 2012 Excerpt: Our research confirms Gödel's vision: time is not a physical dimension of space through which one could travel into the past or future.” http://phys.org/news/2012-04-physicists-abolish-fourth-dimension-space.html
What is confirmed to be true in relativity is time dilation.,,, To grasp the whole time dilation ('time coming to a complete stop at the speed of light') concept a little more easily, imagine moving away from the face of a clock at the speed of light. Would not the hands on the clock stay stationary as you moved away from the face of the clock at the speed of light? Moving away from the face of a clock at the speed of light happens to be the same 'thought experiment' that gave Einstein his breakthrough insight into e=mc2.
Albert Einstein - Special Relativity - Insight Into Eternity - 'thought experiment' video http://www.metacafe.com/w/6545941/ "The laws of relativity have changed timeless existence from a theological claim to a physical reality. Light, you see, is outside of time, a fact of nature proven in thousands of experiments at hundreds of universities. I don’t pretend to know how tomorrow can exist simultaneously with today and yesterday. But at the speed of light they actually and rigorously do. Time does not pass." Richard Swenson - More Than Meets The Eye, Chpt. 12 Time dilation Excerpt: Time dilation: special vs. general theories of relativity: In Albert Einstein's theories of relativity, time dilation in these two circumstances can be summarized: 1. --In special relativity (or, hypothetically far from all gravitational mass), clocks that are moving with respect to an inertial system of observation are measured to be running slower. (i.e. For any observer accelerating, hypothetically, to the speed of light, time, as we understand it, will come to a complete stop). 2.--In general relativity, clocks at lower potentials in a gravitational field—such as in closer proximity to a planet—are found to be running slower. http://en.wikipedia.org/wiki/Time_dilation
As well there are 'wormholes' of sorts within space-time, but these do not allow time travel as these guys have it envisioned, rather these 'wormholes' allow trasition to a higher 'eternal' dimension of time. And these 'wormholes' are found when one accelerates to the speed of light or they are found when when one falls to the event horizon of a blackhole: Please note the optical effect, at the 3:22 minute mark of the following video, when the 3-Dimensional world ‘folds and collapses’ into a tunnel shape around the direction of travel as a 'hypothetical' observer accelerates towards the ‘higher dimension’ of the speed of light: (Of note: This following video was made by two Australian University Physics Professors with a supercomputer.)
Approaching The Speed Of Light - Optical Effects - video http://www.metacafe.com/watch/5733303/
As well, as with the space-time tunnel curvature for special relativity, we also have scientific confirmation of space time curvatur’ to a eternal ‘event horizon’ for general relativity at black holes. The following video is a imaginary visualization of what our empirical evidence is now telling us:
Space-Time of a Black hole http://www.youtube.com/watch?v=f0VOn9r4dq8
What is interesting to note in relation to time dilation and space time curvature is that we also have eye witness testimony of both time dilation and space time curvature from people who have had deep Near Death Experiences in which their eternal souls left their 'temporal' bodies:
'Earthly time has no meaning in the spirit realm. There is no concept of before or after. Everything - past, present, future - exists simultaneously.' - Kimberly Clark Sharp - Near Death Experiencer The NDE and the Tunnel - Kevin Williams' research conclusions Excerpt: I started to move toward the light. The way I moved, the physics, was completely different than it is here on Earth. It was something I had never felt before and never felt since. It was a whole different sensation of motion. I obviously wasn't walking or skipping or crawling. I was not floating. I was flowing. I was flowing toward the light. I was accelerating and I knew I was accelerating, but then again, I didn't really feel the acceleration. I just knew I was accelerating toward the light. Again, the physics was different - the physics of motion of time, space, travel. It was completely different in that tunnel, than it is here on Earth. I came out into the light and when I came out into the light, I realized that I was in heaven. Barbara Springer Near Death Experience – The Tunnel, The Light, The Life Review – video http://www.metacafe.com/watch/4200200/
Music and verse:
Love & The Outcome - "He Is With Us" http://www.youtube.com/watch?v=tJKZxB_Hx70 John 8:23 But he continued, "You are from below; I am from above. You are of this world; I am not of this world.

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