As a child in grade school, I would day dream about time travel. I always thought of going into the future to see what it would bring. Today, I dream of time travel as a means to revisit my past and beyond. Science fiction movies would always provide for more dreams of time travel, and it wasn't until I began to read up on the possibility that it can be done, that I would no longer think of it as fantasy.
So many things about our universe that we do not understand. All are just as intriging as time travel. What seemed impossible years ago is now possible today. Time travel is no different. Although we can't do so today, that is not to say that it won't happen in the years to come.
We have already succeeded in transporting something of a molecular size through time, by using light as a source for doing so. It was done by using an intricate array of laser beams in the form of a tunnel that they successfully did the experiment. What is not known is what place in time it went to, or where.
Time travel "is" possible. Since the faster one travels, time slows, and is relative to how fast he travels. At the speed of light, time supposedly stands still for those aboard a craft traveling at that speed. Using the same principle as used to calculate a light year, its easy to calculate how many years would pass for those who remain on the planet, as opposed to those on the craft.
About 75 years of earth time would pass for each hour on the craft traveling at the speed of light. Beyond that speed, thousands of years could pass for each day on the craft. Those aboard a craft at light speed are in fact time travelers, but have a limited time, which is their normal life span for which to explore the future. Although time stands still at the speed of light, the aging process still continues in real time while skipping through the years like in a fast forward mode.
This brings up an interesting question about how time may differ right here on the planet. At the equator, the speed by which we rotate is approximately 1030 miles per hour. Dead center at the poles would be almost zero MPH. So if speed slows time down, then it could be assumed that those living on the equator live longer than those who might have established residence at the poles. Of course we're only talking a few minutes or even an hour over a lifetime, but a slowing of time to be sure.
We can imagine building a craft to travel at light speed, therefore one day we will. We may even develop a method of "beam me up Scottie" type of travel. Its wide open. Think of where we are today as opposed to 100 years ago.
We just can't seem to stay still. We are creatures with a thirst for the unknown, and we will satisfy that thirst no matter what the cost.
For those who would venture traveling through time, they must resign themselves to the fact that they will leave everything they are familiar with behind, and be ready to face what ever the future that they travel to has in store for them. Unless time travel can work in both directions, it wouldn't be the most comforting thing to do. Time seems to travel fast enough for me these days, so if it comes in my lifetime, I'll just pass.