Yes and no..

You can slow time down and essentially travel into the future. The faster an object moves the slower time goes for it. If you are traveling at the speed of light time will be substanially lower for you. How ever time in the Universe around you will continue on at the same pace.. So 1 second would pass at the speed of light while 8 seconds pass for the rest of the universe. (Those are not accurate numbers just examples)..

There for if you travel at the speed of light for 1 year when you stop 8 years will have passed.

You can see example of this.. GPS satellites had to take into account these changes in time.. If they hadn't they wouldn't work.

Currently there is NO known way to travel back in time. There are theories.. But the problem with those theories is that traveling back in time requires creating a loop. With the loop theories you would only be able to travel back to the points in which loops had been created.

I think theory of the time travel is a state of the mind ,when we discover a secrete of the past or future power of our imagination and un conches of the human brain it can projectile dramatic images and make connection to particular of the time (example vision).Traveling physically it's an impossible matter but visionary may possible .Brain has ability of sending radio signals this signal are acting same as radio telescope (teleporting) and also received signals ,which it produce images we call imagination .Possibility of an imagination become true is more than physic. Most the inventions are result of power of the imagination .It is possible to shoot a cell with very high speed to the space but this is just type of travel in distance ,time in our measurement is passing trough to the happening and events .Some thing as time is not applying to the space .For example if you can travel out of our galaxy ,day and night ,month and year will not make any sense to you ,cause you see it all in one place .

Only into the future and that (other than the mundane time travel you and I are currently experiencing) is still technologically unfeasible (and will likely remain that way).

Backwards time travel is not a matter of, we don't have the technology or we haven't found the physics yet--it's a mathematical impossibility because it leads to logical paradoxes: http://science.howstuffworks.com/science-vs-myth/e...

The ONLY possibly backwards "time travel" is through the many worlds hypothesis. But you aren't actually traveling into the past--instead you are traveling to another universe which just so happens to be identical to ours except it's x amount of time in the past. Once you go there you change things so that the universe is no longer the same as ours.

It does not appear that time travel into the past is possible.

However, I have a time machine. It instantly transports me about 5 minutes into the future. All i have to do is push the button on top. I can't use it very often because i have to get my butt out of bed and get to work.

Time travel affects adversely on human being. Traveling greater than speed of light never easy. We even can't think to cross speed of light. So, mass will be infinite. If speed is greater than that it will need negative energy. That's not possible.

theoretically yes, practically not really as time slows down as you approach lightspeed, spend a few years going 90% of light speed and come back to earth and thousand s of years would of past!

not really time jumping but time distorting but unless wormholes can be opened in space its all still pure theory! i decided years ago that if time travel was possible in the future i would come back in time to give me winning lottery numbers, but nothing yet so for the next 50 odd years theres just no chance-i am 35 now, but if an older you comes back only then you will know!?

With current technology its not possible. To time travel we need to exceed the speed of light. At the moment only the protons has come closer to time travel. At CERNs particle accelerator called Large Hedron Collider can accelerates the protons to near light speed. Go back in time is theoretically not possible to my knowledge.

Steven hawkings threw a party for time travelers and told no one about it. The next day he announced that no one came.

Makes sense? So, if there were time travelers they would have known about the party and came. But there were none.

Time travel maybe possible maybe not. Whether it is possible or not is not proven. No one knows whether it is possible or not.

This is not known.