do you think time travel is possible?

Question

i dont, i recently proved this one wrong, einstien helped me with this part, if you get 2 particles, spin one left, the other goes right, now put one 200 light years away, spin the one on earth right, the other goes left, INSTANTLY, so the information is going faster than light, the speed of time, instantainiously., now heres my part, this proves 2 things, the speed of light isn't the fasted speed ever, and that the speed of time is the speed of information, so if you somehow went faster than this, you would dissapear because your atoms, which are information, couldn't keep up with you because your going faster than information, so your not going faster, it makes you dissapear before you get faster, and also i have heared that you need infinant energy to go faster than light, and there is not infinant energy in the whole universe. so thus explaining why time travel is not possible.

Answer 1

Your arguments are based on Special Relativity. You neglect the possible existence of particles called Tachyons which have always travel faster than the speed of light, and therefore, have never needed to pass through that barrier. There are also General Relativistic effects that suggest that time travel *may* be possible. Like Tachyons, they depend on hypothetical states of matter that may not exist in principle, though, (like cosmic strings and negative mass). I suspect that such states don't actually exist due to The Grandfather Paradox it would result in. Even that paradox, though, has a possible resolution in the Many Worlds interpretation.

Answer 2

No.

You've provided some interesting points.

However, light speed is indeed the universal speed limit and the fastest possible transmission of cause and effect. If our sun dissapeared tomorrow morning at exactly 8:00 am, there is absolutely no way we could know this until approximately 8:08 am.

As far as time travel, it is my contention (as well as Einstein's time line graphs) that the future does not exist - only the passage of time can bring us into the future. The past also does not exist in any type of reality - only in our memories. The only "existance" is now. We are like a traveler on a time line moving at a smooth pace into the future - there's only "looking" back, and no "going" back. Our velocity on this time line is determined by our proximity and strength of our gravitational field, our acceleration and any speeds we may attain approaching those of light. All things consistant, and our trip through time is a smooth continuum.

And you are correct in the fact that we cannot go faster than light - actually, we cannot even travel at light speed (infinate mass and infinite energy are possible only with the pencil and paper of a mathematician and not in reality.)

Once again - there is no such thing as action at a distance without the passage of time. And the absolute minimum time required in the action and reaction is determined by the speed of light.

We hear so much about time travel because it so intriquing to suppose we may someday travel to the future or into the past - but, regardless of the implied time travel when certain factors are used in the mathematics - it is, I'm afraid, just fodder for sci-fi writers.

Answer 3

We are all traveling in time as we speak. However, jumping off the track that we are on, or speeding up, or reversing would appear impossible for reasons of conservation of mass-energy.

Consider: You are, at this moment a physical-chemical being made up of discrete atoms. In the past those atoms were parts of other things: comets, trilobites, tree ferns, volcanic gases, other people, etc. In the future, those atoms will be part of something else again. Which gets to the point, if you travel to the future or past what will the traveler "you" be made of? It would appear that those atoms would have to be precisely duplicated to allow for your arrival. However, this new material would violate the conservation of mass-energy for the universe, since the new material cannot come from nowhere, and the energy necessary to form heavier new atoms is present only supernovae (an unlikely device for a time machine).

Answer 4

Time travel is possible. All you need to do is travel at or near the speed of light.
If we are able to place a man in a space ship and launch him from earth near the speed of light to a planet that is 4 light years away and immediately return him back to earth, he would have age a total of 8 years.
When upon reaching earth, the people on earth would have aged much more than he did. In fact he may have been gone for 16 years on Earth, even though to the man in the space ship he was only gone for a total of 8 years.
Time will stop or slow down for the person who travels near or at the speed of light.

Answer 5

Actually, my friend, your reasoning proves time travel to be possible, which I do not believe it is. If a mass travels faster than the speed of light, it will actually travel backwards in time because of time dilation. As a mass approaches speed of light, time slows down and would run backwards if the speed was surpassed.

Here's the part where I prove conventional hyperlight travel is impossible. Due to a few "quirks" in the quantum nature of matter, the energy required to accelerate a mass to the speed of light exponentially increase as speed approaches that of light. Basically, an infinite amount of energy would be required to reach lightspeed, let alone speeds beyond that.

However, bending space is relatively easy and feasible as a means of transport.

"Yes...............time is a continuum which can go forward or backward if we could figure out how"
Spoken like a blonde. Time is a continuum, but it is impossible to go backwards. It is also impossible to go faster forward than the rest the the universe. But you CAN go slower forward than the rest of the universe thanks to time dilation.

P.S.
@ selfrob
Incorrect. You don't understand the nature of the space-time continuum. It is not he that is traveling, rather the rest of the universe is traveling forward while he is going slowly or standing still. From a standpoint, we all are traveling, yes.

Answer 6

to add to selfrob's point. if you were traveling at the speed of light for 8 years, your would age about 2 days when u returned home, because time does slow down by a factor of about 1400. so basicly traveling 7 years 363 days in the furture. GL reaching the speed of light though

Answer 7

Yes. All you need is a DeLorian, a flux capacitor, a speed of 88 mph, and a great Huey Lewis soundtrack.

Answer 8

You are traveling through time now!
As for the particles spinning, have you not heard of the string theory?

Answer 9

right, and more simply, people want time travel to exist just like they want god to exist. They dont know the answer, so they just make bs up.

You cant travel time, its gone.

Answer 10

Yes...............time is a continuum which can go forward or backward if we could figure out how.....................that is how some people can predict the future, because it already exists.