Will mankind ever time travel?

No.

.

We are traveling through time.

If we can get closer to the speed of light, then we can slow down the processes for the travelers, and they'll arrive back 'in the future' quite far, but having barely aged.

In terms of going backwards in time, that is much less likely by any theory or technology we're even close to understanding.

Chances are that if we were ever able to travel back in time, we'd become familiar with someone somewhere who has had an actual encounter with a time traveller, and yet literature is remarkably absent of such things. Except for some relatively modern lunatic fringe types, there's no evidence of visitation from the future -- and we'd have to ask, why not? What would be the purpose in not revealing that such technology will exist in the future? After all, we speculate about and plan for future technologies all the time.

Consider this - If an engine has been made that can travel 99.99% the speed of light - it will take 4 light years to get there - Well thats what we percieve of their journey. For the crew itself it would only be four days since speed and mass are directly proportional to time. The faster the crew goes the more slowly time travels for them.

It would take 80 years for them to leave the edges of our galaxy - which in lightyear terms is into the high thousands.

For sub atomic particles they can go faster than the speed of light - but whether humans can harness the laws that govern sub-atomic particles isnt known yet - but quantum mechanics has revleaved enough so far to atleast make the theory of time travel plausible.

You ARE traveling in time as we speak. To travel back in time is an impossibility other than reminiscing over old photos, books, and movies. To travel far into the future some day may be a reality if we can find a method of putting someone to sleep for extended amounts of time however that person can never go back.

Technically, the answer to your question is that we do travel through time.

The fact is, some of us do travel at a rate different than others through time. Astronauts and even pilots, flight attendants and anyone who travels at any speed faster than someone else ages a bit slower than other observers.

If we could travel at say half the speed of light, for say a year or two, and then back to Earth, we would indeed return to people who had aged dozens of years compared to us. That said, anyone moving at a faster rate than someone else travels into the future a tiny bit compared to that other person. That's a fact.

Going back in time is not so easy ... and there is a major paradox involved in that you could go back in time and kill your grandfather, which means you would never be born, which means you could have never gone back in time to kill your grandfather.

Its just a matter of traveling fast enough and yes we could travel through time. Purposes? Im sure some greedy &*** will be doing it for profit

Technically we are travelling through time as we speak.

Time is relative to space and makes up something called the space-time continuum.

As an object increases in mass, space-time will bend more and more creating a stretching effect in time which will slow down time at that point relative to 'normal' space-time.

This is where the speed of light comes in, as an object approaches the speed of light, the object's mass will approach infinite and therefore space-time will stretch incredibly (in theory) and time will go incredibly slow at that point relative to 'normal' space-time. This is why time slows down as approaching a black hole. It is a time distortion effect.

So yes, humankind will time travel as we are doing it right now.

Theory says that if one were to go the speed of light, you would be able to time travel. Only problem is that we can not go the speed of light.

Travel backwards is most likely impossible. To travel backward the only reason would be to perpetrate a fraud or commit a crime.

No, If they had of we would know cause they would of time traveled back through the ages and it would of happened by now somebody would of recorded it, there could be rules for time traveling but people always break rules, so, unfortunately, no!

depends if wormholes exist in the universe, and if humans can actually go through them without being ripped apart. if wormholes do exist, there's a chance time will speed up...therefore, time traveling.

going back in time; no, most likely not.