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We,even now are travelling to the future,second by second.If free will is not an illusion then time travel in the future,more than our rate, is IMPOSSIBLE but if it is then it is POSSIBLE.Time dilation is used to explain it,based on the speed of light as the world's limit of speed(299,792,458 metres/second).Nothing with mass can travel at that speed but scientists claim negative mass CAN.Anyway,time dilation has already been proven.An atomic clock was used in a spaceship to count the time it feels as back on earth a scientist used a clock too.The spaceship came back with a tiny of less time than the scientist's.Some scientists say faster than light can reverse time,but the most say it doesn't.None has been proven.There is also the twin paradox here:http://en.wikipedia.org/wiki/Twin_paradox

Back in time seems to be a more modern idea.Scientists say it takes wormholes to expand or that negative energy is needed to load a flux capacitor of 1.2 gigawatts of power(with plutonium).Others say that superluminal speeds are likely to do so.But it MUST be impossible because of its chain of paradoxical events like what would happen if a traveller went back in time and prevented his grandfather from meeting his grandmother or prevented himself of travelling in time?Or,the predestination paradox where a traveller is caught in a loop of events that predestinate him to travel back in time?What if he aged in the loop?Last but not least the bootstrap paradox where info/matter is sent back when it wasn't born/created.In that way it can lose its origin,like in the film "Back to the future" where Berry's song was heard back in 1955 when Berry hadn't produced it yet.Thus,it had no origin.Another example is Terminator,mostly in the main enemy Skynet,where a cyborg is sent back in time to kill Sarah Connor,but it's destroyed and its parts are collected to make the smart base Skynet and in the future send the cyborg for its mission.The info about how to build the base has no origin.An explanation is the existense of multiple universes and histories,where altering to the past is allowed by entering another universe but it hasn't yet been proven to be right.

Hope this info helped.

Yes, you can but with conditions.

First, you can only go back as far as the time your time machine is turned on.

Second, even if the machine is turned earlier you can only go back to the time you are born.

With the theory of parallel universe you do not need to worry about "done" or "undone" action. The parallel universe theorized that there are countless copies of you. Going to the past simply means choosing your existence to another copy without destroying the previous copy.

There are two ways of going about time travel: Space time deletion by speed and the other is through a worm hole. Every movement we make must involve space time dilation: an act of time travel in our everyday life.

But maybe that's a time travel too small to be realized.

confident in a single course: the destiny. to realize this, you need an exceptionally speedy spaceship which could return and forth to a important fraction of the value of sunshine. you will adventure time contraction alongside here formula t' = root (a million -v^2/c^2)*t the place t' is the time you adventure t is the time experienced with the aid of a table sure observer (e.g earth) v is your velocity c the value of sunshine. working example in case you have been to return and forth at 10% of the value of sunshine, you are able to adventure a time contraction of ninety 9.498% no longer very wonderful. yet at 50%, time contraction could be 86.60% at ninety%, it could be 40 3.fifty 8% at ninety 9%, it could be 14.10% at ninety 9.9%, it could be 4.40 seven% So in case you may get a spaceship to realize ninety 9.9% of the value of sunshine, and take care of this velocity for 4.40 seven years, on your return to earth one hundred years could have long previous with the aid of. Fly for 40 4.7 years, and are available back to earth 1000 years later. So in theory you are able to return and forth forward in time. virtually there are some snags. With increasing velocity , basically like time contracts, your mass augments interior an identical share (e.g. if time runs 10x slower, your mass is 10x larger. in an attempt to adventure an identical stress on your seat, you are able to choose to chop back your acceleration considering your mass better (bear in mind F=ma). additionally it could grow to be an increasing form of perplexing to pass at those speeds and in all possibility your physique could go through serious trauma (working example each and each heartbeat could require a lot greater power).

Yes, in fact, time travel IS already performed. An atomic clock was put on a space shuttle and another atomic clock was left on the earth. When the space shuttle came back down to earth, the high orbiting speed of the space shuttle affected the space/time of the clock such that the time moved slightly more slowly on the shuttle (albeit minimally).

We know "how" to time travel, it's just that to actually make it useful would require going at much faster speeds than we are able to do currently.

Read up on Einstein, and you'll be fascinated.

Yes time travel is possible but only into the future. The only possible way to time travel is to get something moving at almost the speed of light in one direction, the faster you go the slower time is. However there is no speed that will take you back in time.

If you could find proof that the speed of light can be surpassed, then yes time travel is possible.

But what if you were a moment away from dying and what you see now, is your life flashing before you. hehe

I'm time travelling into the future right now as I type this. I've gone 35 years into the future so far and hope to make it much farther.

It is only possible in fantasy. Time does not have such a nature that it allows travel in it.

Forward, yes, backwards, no.

If someday it is possible (which it probably will be considering how far we've come so far), like you said, it will probably screw many things up.