why cant we travel through time ?

Answer 1

YES! Time travel is possible. For example, an object traveling at high speeds ages more slowly than a stationary object. This means that if you were to travel into outer space and return, moving close to light speed, you could travel thousands of years into the Earth's future.

Newton's most important contribution to science was his mathematical definition of how motion changes with time. He showed that the force causing apples to fall is the same force that drives planetary motions and produces tides. However, Newton was puzzled by the fact that gravity seemed to operate instantaneously at a distance. He admitted he could only describe it without understanding how it worked. Not until Einstein's general theory of relativity was gravity changed from a "force" to the movement of matter along the shortest space in a curved spacetime. The Sun bends spacetime, and spacetime tells planets how to move. For Newton, both space and time were absolute. Space was a fixed, infinite, unmoving metric against which absolute motions could be measured. Newton also believed the universe was pervaded by a single absolute time that could be symbolized by an imaginary clock off somewhere in space. Einstein changed all this with his relativity theories, and once wrote, "Newton, forgive me."

Einstein's first major contribution to the study of time occurred when he revolutionized physics with his "special theory of relativity" by showing how time changes with motion. Today, scientists do not see problems of time or motion as "absolute" with a single correct answer. Because time is relative to the speed one is traveling at, there can never be a clock at the center of the universe to which everyone can set their watches. Your entire life is the blink of an eye to an alien traveling close to the speed of light. Today, Newtonian mechanics have become a special case within Einstein's theory of relativity. Einstein's relativity will eventually become a subset of a new science more comprehensive in its description of the fabric of our universe. (The word "relativity" derives from the fact that the appearance of the world depends on our state of motion; it is "relative.")

We are a moment in astronomic time, a transient guest of the Earth. Our wet, wrinkled brains do not allow us to comprehend many mysteries of time and space. Our brains evolved to make us run from saber-toothed cats on the American savanna, to hunt deer, and to efficiently scavenge from the kills of large carnivores. Despite our mental limitations, we have come remarkably far. We have managed to pull back the cosmic curtains a crack to let in the light. Questions raised by physicists, from Newton to Kurt Gödel to Einstein to Stephen Hawking, are among the most profound we can ask.

Is time real? Does it flow in one direction only? Does it have a beginning or an end? What is eternity? None of these questions can be answered to scientists' satisfaction. Yet the mere asking of these questions stretches our minds, and the continual search for answers provides useful insights along the way.

Answer 2

technically we can, if only by a second or two, well I should say, we could. Concorde went so fast that if you went right round the earth and your watch was exact to the second when you left, it would be a second or two off when you came back. travelling forward in time would just involve the ability to travel extremely fast in the same direction that the earth is spinning. travelling backwards in time is theoretically possible but it needs a huge vacuum and other hard-to-explain things, and it's two complicated for me to explain. I'd give you a link to where I found this information but it won't exist for another 46 years, and I'm actually from the future. nah actually I just forgot the website address.

Answer 3

something you're listening to ideal now's sound travelling by easy. The sound waves push air molecules. easy debris are travelling at a extremely bigger velocity and the easy waves have a extremely tighter frequency so the two do no longer possibly work together in any way. This evidenced via the undeniable fact that sound travels only as rapidly at nighttime because it does throughout the time of the day. we don't hear the suns explosions as area is quite lots a vacuum so there are not sufficient air molecules to allow the sound waves to return and forth.

Answer 4

Like early stated. In theory it IS possible. We are restricted by our modern day technology. I can understand how time travel would be possible to go into the future (going faster than the lightwaves) but I don't see how you could go back in time!
Also, if you did go back in time there could be a problem, say for example you go to Aztecs and it takes 5500 people to build a pyramid there, then you go and be involved, you have changed events and this means that now there are 5501 people building the pyramid. Likewise you can have a problem with the future, you go forward, get someone pregnant, and then come back. What happens to that woman and her baby? does this mean you have a child or not?

Answer 5

Cause and effect and the universal constant of the speed of light.
Although very intriquing, time travel is for the science fiction writers.
However, you can see back in time anytime you gaze into space. You are seeing the star, for instance, as it was many, many years ago when it emmitted the light that is now reaching your eyes - in fact, the star may not even exist anymore, but the light it emmitted before it burned out is just now reaching you.
To see into the future, well, that's quite another story - in theory, it involves speeds that are simply unattainable in theory and reality.

Answer 6

In theory, you have to travel faster than the speed of light in order to travel through time. No one's ever managed that yet, so we can't travel through time.

Answer 7

Time-travel is possible.Current discoveries in science prove it.How else can a particle exist in two places at the same time, millions of light years apart, otherwise?(quantum-physics).
I recommend checking up on materials ,whose properties can weigh less than nought.I am sure this will be how it is achieved.The modern day philosophers stone, or ark of the covenant.Call it whatever

Answer 8

Theoretically, we would have to travel at or faster than the speed of light to rip the time-space fabric, but then again, THEORETICALLY, we can't travel at the speed of light, since by the equations of relativity, our mass becomes closer to infinity (very, very heavy) as we approach speeds closer to light. Since it is impossible to have enough energy to move accelerate anything that has mass close to infinity, it is impossible to cross the barrier of the speed of light. Thus no time-travel is possible. (At least that's my opinion).

However, we can 'lengthen' time, for instance, induce G-0 conditions in cells so that they barely age (kind-of). There was a case of a girl who didn't age for 8 years or so (only case in the world, I think) , mentally or physically. Thus, although we may not travel in time, we may cheat against its effects.

Answer 9

Technically we do, an air plane can travel half way across the world in a matter of hours. Wouldn't you say that is sort of time travel?

Answer 10

We will NEVER be able to travel BACK in time
because we would know a time traveler coming from future!!!