Time Travel , possible or impossible ?

[Darkness0]

Time and Physical Reality are not within each other.
I do believe it's impossible to Time travel, after all what they say are only their assumption.

[IdEatYouAlive]

You dont really know what spacetime is, do you?

[Darkness0]

Poor child, limiting yourself to other's speculation.
If you notice, I meant something else.

[NikkiCarton]

Possible. With limitations. Since the earth isn't a perfect sphere it elongates and widens in cycles. Orbiting the earth at the speed of light and returning again will allow you to return to a world that experienced more earth years then you yourself experienced. Not sure exactly why, for more info look up through the wormhole with Morgan Freeman

[johnyboy117]

i have found a quot from the show that stephen hawking is the host of said on it is impossible to travle at the speed of light. but he had a very interesting theory that if one could utilze the gravity well of a black hole by travleing fast enough to stay out of the hole itself then in theory time would slow down in small incramints so when you finaly broke away you wouldv only gained a couple years when in our time ten fifteen years have gone by. so general terms yes you could "time travle" but only if you have a massive amount of gravity and mass to spin around. as far as radiation goes i realy dont know all that mutch about it because we are just starting to cover it in my 11th grade chimistry class.

[Honey25297]

I wish it was possible to go back in time. If any of you make a time machine please let me know.

[Tbird915]

You guys are looking at time travel as well travel in the sense it requires movement and in that case time. To be able to "beat" time you would need to exist outside of its influence.

[snowboarder1992]

if their are an infinite number of possible realities then their must be a reality that results in the destruction of all realities therefore you cant travel to another time strand, however, if every particle in the universe backtracked its movement energy transfers time would have gone back two seconds, however it is impossible for one two travel in time

[michaelyin]

I saw an interview with Neil deGrasse Tyson where he described a PhD paper, talking about two colliding black holes.. apparently, if you could map the spacetime disturbances, one could orbit the black holes in a specific pattern, literally surf the gravitational waves, and once you exited the disturbance, you would have exited the gravity well before you entered it. Cause came after effect. Was pretty cool.

[Vycanon]

Well according to Stephen hawking its radiation feedback. Radiation going through and then coming back from the other end to create radiation feedback to the point of desctruction

[FilterDreaming]

If I recall there is a theory that says its possible to travel forwards but not backwards. I forget why though.

[michaelyin]

If I recall there is a theory that says its possible to travel forwards but not backwards. I forget why though.

Yeah in a way this is what the theory of relativity predicts. The closer to speed of light that one travels, the slower time will pass on your hypothetical spacecraft will pass in relation to your starting point. For example, if you spend two years on a hypothetical train that is traveling at 87% of the speed of light, the outside world will have lived through four years before you step out again. A baby born on the day the train started will be two years old (if being inside the train) and a baby born outside will be four years old. I can post the equations if theres interest. The concept is called time dilation and affects us in a surprising way, if not adjusted for gps satellites would be off by hundreds of meters.

[FilterDreaming]

Yeah in a way this is what the theory of relativity predicts. The closer to speed of light that one travels, the slower time will pass on your hypothetical spacecraft will pass in relation to your starting point. For example, if you spend two years on a hypothetical train that is traveling at 87% of the speed of light, the outside world will have lived through four years before you step out again. A baby born on the day the train started will be two years old (if being inside the train) and a baby born outside will be four years old. I can post the equations if theres interest. The concept is called time dilation and affects us in a surprising way, if not adjusted for gps satellites would be off by hundreds of meters.

Yes this is exactly what I was talking about. I just hadn't spoken about it since I was a child.

[joejoeinthesnowsnow]

Grow a TARDIS =P

[Luniz_]

Of course not.

[Eldarya]

Theory or not, I don't think time travel is possible.

I honestly don't think we will ever be able to alter the past or go back in time or in the future... Especially since time travel to the future means the future is going on now so if we EVER had a time machine someone would have already come back to the past from the future.

Because if we get the time machines later, who says our "future" selves couldn't come back to this point in time.

[FilterDreaming]

Because if we get the time machines later, who says our "future" selves couldn't come back to this point in time.

Who said they haven't

[MDJ2000]

time travel couldn't be possible, you would have to break the law of physics and mess up the space time continuum. traveling through different universes though is a different story and chances are it is possible

[Vycanon]

Time travel into the past is possible through the use of wormholes to an extend but it requires such care and a huge amount of energy. Like anything time has holes and cracks. In the future using huge amounts of energy we can expand on those holes and create a worm hole. From that if we slow down time on one end and on the other end time is passing normally you can create a hole in space time. But we cant travel back to now because this device would only work after the wormhole was created. Even then we would have to counter feedback radiation. This is possible because 1) we cant travel back to now so thats why we dont see people from the future and 2) if you created a paradox it would not affect the past because the cause at is being erased by its own effect is after in time and not present. So yes theoretically it is possible for time travel into the past to exist with limitations. But it would be extremely hard to master and probaly wouldn't happen because it could destroy the fabric of space time in the future. If you want me to explain this in an analogy just ask xD

[flumbooz]

No, as time doesn't exist. Time is evolution, it's the earth turning around and thus there is something like day and night. time is only an illusion to make our lives easier.