Jump to content
  • Advertisement

Time Travel Is Possible But Only to the Future


Ron

Recommended Posts

We may be able to book our ticket to the future someday -- it'll just be a one-way trip.

 

In a presentation at the British Science Festival, particle physicist Brian Cox said that time travel is possible but only in one direction.

"The central question is, can you build a time machine? The answer is yes, you can go into the future," the University of Manchester professor told the audience during his hour-long speech on Tuesday, according to The Telegraph. "You've got almost total freedom of movement in the future."

Cox detailed how time travel to the future is possible under Albert Einstein's general theory of relativity. Traveling hundreds, or even thousands of years into the future, could be accomplished if someone was traveling at an incredibly fast pace, close to the speed of light.

Discovery News equated the theory to the so-called "Twin Paradox:"

Imagine twins, one stays on Earth (Twin A) while the other (Twin B) boards a spaceship and flies off at relativistic speeds. Compared with Twin A’s timeframe, Twin B’s timeframe will slow. If time is running slower for Twin B, then he/she will return to Earth where a lot more time has passed and Twin A has aged significantly more than Twin B. The mechanism behind this is “time dilation” and it has a stronger effect as you travel closer and closer to the speed of light.

Coming back from the future or traveling to another point in the past is much less likely, according to Cox.

Relating his theory to the popular British science fiction show "Doctor Who," Cox explained that the time-traveling Doctor would need to find a wormhole in order to return to the past. The theoretical bridge, or shortcut through space-time, proposed under Einstein's general-relativity theory has never been proven to exist. And, even if a wormhole were discovered or created, there's no telling whether humans could actually use it to travel through time.

Cox isn't the only one to theorize that a wormhole could allow time-travelers to travel backward in time. Earlier this year, astrophysicist Eric W. Davis of the EarthTech International Institute for Advanced Studies said that a wormhole would be the best option for back-in-time travel. But, Davis acknowledged, it would "take a Herculean effort to turn a wormhole into a time machine." 

 

Source: http://www.huffingto..._n_3921944.html

 

Link to comment
Share on other sites

We were taught this last year in one of my classes and I always thought it was common knowledge/pretty obvious.

 

 

Yeah I've read about that twin thing before and heard about it in school probably.

 

That makes sense, being as you're both college students currently in the system; general public, for the most part, is oblivious. 

Link to comment
Share on other sites

That makes sense, being as you're both college students currently in the system; general public, for the most part, is oblivious.

I'm not a college student, I'm only 16. :P But like Termi said I thought most people knew this.
Link to comment
Share on other sites

That makes sense, being as you're both college students currently in the system; general public, for the most part, is oblivious. 

 

Uh, college kids aren't normally taught quantum mechanics. The general public, for the most part, should know that the universe is always expanding and that it doesn't make sense to have the ability to make the universe stop expanding and start collapsing. Will they know all the paradoxes and theories? Probably not. But everyone should have the sense to know that if everything is moving forward then it's hard to go backward. It's like being on the moving floors at an airport, or even an escalator. It's easier to go with them than to go against them. It's easier to forward time travel than to backward time travel.

Link to comment
Share on other sites

Uh, college kids aren't normally taught quantum mechanics. The general public, for the most part, should know that the universe is always expanding and that it doesn't make sense to have the ability to make the universe stop expanding and start collapsing. Will they know all the paradoxes and theories? Probably not. But everyone should have the sense to know that if everything is moving forward then it's hard to go backward. It's like being on the moving floors at an airport, or even an escalator. It's easier to go with them than to go against them. It's easier to forward time travel than to backward time travel.

 

Wouldn't you agree that a college student is more likely to pick up stray facts here and there on a college campus than the average Joe? It's not about paradoxes, theories, bullshit, etc. The concept of "Hey, we can go forward, not backward" is easy to grasp and one that I doubt many people are aware of.

Link to comment
Share on other sites

They say that you could travel back in time but not before the time machine was created. Then again, that can result in a time paradox where you would go through a different timeline rather than the one where you originally came from. Hmm, guess Steins Gate said it well. Anyway, if you travel several years at the speed of light time travel can definitely be possible and you would end up in a specific period in the future, not the one that you choose however.

Link to comment
Share on other sites

Wouldn't you agree that a college student is more likely to pick up stray facts here and there on a college campus than the average Joe? It's not about paradoxes, theories, bullshit, etc. The concept of "Hey, we can go forward, not backward" is easy to grasp and one that I doubt many people are aware of.

 

Uh, well, I don't know what you think goes on at an art school campus, but we certainly aren't sitting around discussing the philosophies of time travel - although, I don't go to any hookah circles, so for all I know that's where all the geniuses go to talk about theories and whatnot. Me knowing that you can't go backward in time has nothing to do with the fact that I go to college, considering I learned that prior to me going to college. If I can sit down and watch the Futurama episode "The Late Phillip J. Fry", then so can the average Joe. And if I can learn the basics of time travel from that episode, then so can the average Joe.

Link to comment
Share on other sites

Uh, well, I don't know what you think goes on at an art school campus, but we certainly aren't sitting around discussing the philosophies of time travel - although, I don't go to any hookah circles, so for all I know that's where all the geniuses go to talk about theories and whatnot. Me knowing that you can't go backward in time has nothing to do with the fact that I go to college, considering I learned that prior to me going to college. If I can sit down and watch the Futurama episode "The Late Phillip J. Fry", then so can the average Joe. And if I can learn the basics of time travel from that episode, then so can the average Joe.

 

Again, it's blown way out of proportion when you put it as the "philosophies of time travel." It really is not that hard to pick up "HEY WE CAN GO BACKWARDS BUT NOT FORWARD IN TIME" from someone. You're right, I'm sure the only words that come out of your mouth or the mouthes of your classmates is about art during the day. Of course anybody can sit down and watch Futurama; it's not like they do. They have the ability to learn, but more than the majority of people don't and, once again, are unaware.

Link to comment
Share on other sites

That makes sense, being as you're both college students currently in the system; general public, for the most part, is oblivious.

I'm 15 and I already knew this because if time travel back to the past were possible, wouldn't someone already have come back and created a paradox? :P
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...