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Time Travel

Sapper

By Sapper,
in Huddle Lounge

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Jangler Newbie

Jangler

Posted
Posted

First of all, most scientists believe if you could travel back in time, you could only go as far back as to the day the time machine was invented.

But, time travel is possible, yet at this point, man has not discovered the energy source to make it happen.

This is how it was explained on Nova (one of my favorite shows) on PBS.

First, man has to be able to identify a worm hole.

Second, man has to be able to capture the ends of a worm hole and hold it open, which would take a vast amount of energy.

Now that man has the two ends of a worm hole, we get a set of twins to hold one end each, standing next to each other.

Then we send one of the twins with his end of the worm hole into a spaceship that can travel close to the speed of light and the other twin stays on Earth in the same spot for a 24 hour period.

The twin returns to Earth in a matter of seconds to the original spot. He then goes through his end of the worm hole and comes out of the end his twin is holding 24 hours into the future.

The other twin can go through his end of the worm hole and come out of the end that went into the spaceship, 24 hours in the past.

It's that simple.

I've seen that show and I have seen that episode.

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Razzy Newbie

Razzy

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I personally don't think we will ever be able to make a vehicle that travels anywhere close to the speed of light. Not unless we first learn to manipulate gravity.

I've always been more interesting in parallel dimension theories anyways.

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d-dave Veteran

d-dave

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Time travel is a great fantasy, but I don't think there's a lot of practicality to the idea.

First off, I believe in the multiple universe theory. The short hand is that every time a choice is made, reality splits off. So there are an infinite number of parallel universes where all kinds of things are happening. There are universes where McCain won, the Panthers beat the Pats, and I won the lottery...

So I think time travel would simply lead to a new "thread" of universes and you wouldn't be able to go back in time and change things in a way you want. It would simply continue to flow in a new direction, despite your efforts to kill your parents. You would still exist because in another universe, you were still born and your parents still got it on.

I love the idea, but I don't see a whole lot of practicality in going back. Going forward is possible according to Einstein, but going back wouldn't really be worth it because you're not changing the present.

Hopefully that makes sense. I haven't slept decently in a month...=P

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Happy Panther Grand Master

Happy Panther

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Posted

Time travel both forwards and backwards is possible and already happens.

Forward time travel is not really jumping forward in time. It is YOU traveling through time at a different rate than everyone else because of speed and mass and such. According to Einstein time goes more slowly in higher gravitational fields. This is measurable.

As another poster mentioned actually traveling forward in time would invlove a wormhole or skirting around the edges of a black hole. The practical aspects of this are dizzying. Harnessing enough energy to do this would require hooking up with a star. not to mention what happens to a physical body through this process.

I took a relativity class in college and we spent a week discussing how it might be possible. I barely grasped it but it was interesting and I could see how it would be possible.

Backwards time travel also happens in real life at a molecular level. Something about electrons spitting out protons in the past. I couldn't understand it. This and somehow having time loop back on itself with a wormhole or something.

The paradox of time travel is explained by alternate universes which seems like something completely fictional. Stephen hawking says if backwards time travel were possible wouldn't we have had a visitor from the future by now?

Read John Titor's works

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