Do you believe time travel is possible, and if you do, how is it possible?

Question

Do you believe time travel is possible, and if you do, how is it possible?

Answer 1

It is possible to "time travel" into the future but not the past. Allow me to elaborate.The theory of special relativity by Einstein showed that time does not flow at a constant rate. That is true. Time passes differently depending on the speed of the observer. However, the faster you move...time slows down! In that, if you maintained a high speed relative to wherever you wanted to go in the future, you could stay going fast and time would pass slower for you than it would for the universe around you. It is possible to go into the future this way assuming you can go fast enough long enough.  

     Now on going in the reverse. If you traveled at the speed of light ~186,000 mi/sec, time would completely stop for you. You would no longer age as the universe passes time normally (still according to relativity). Now theoretically, if you could travel faster than the speed of light, time would flow in reverse (you could go back in time). Sounds simple enough right? Well it's not. The faster you travel, the "heavier" you become as well. The increase in mass makes it more difficult to accelerate you to any greater speed making it impossible to even get to the speed of light, let alone surpass it. You would also get shorter in the direction you are traveling, but that doesn't have much to do with time travel. There you go...special relativity in a nutshell. In summary, again you can go into the future theoretically, but you can not go into the past because we cannot ever travel faster than light (based on our current understanding of physics).

Answer 2

yes it must be .I dont know how , but i am convinced it is .Every scientist that has got close to the answer has been struck down with either death or a debilitating illness , have you noticed?

Answer 3

You would have to be traveling at like 99.99 times the speed of light to notice any change, at least from my understanding...

Answer 4

Einstein's theories state that time isn't constant - and that it varies with respect to how near the traveller is travelling to the speed of light - the closer to the speed of light, the faster time flows.

So I don't know if time travel would exactly be possible, but if you were to go for a flight in a spacecraft that could travel at say 80% of the speed of light, and you spent ten minutes in it, when you come back to Earth, for them, it would be like 50 years later or something - wheras for you, it was only 10 minutes. So I don't know if that's really time travel - it's more like fast-forwarding.

Answer 5

yes! dont you watch Doctor who? i'm just joking yeah i beleive its possible in real life it already exists theres loop holes in space even in our world, the past come into the future my granny saw a very old fashioned funeral horse cart thing and loads of people go by her she followed it and it disappeared! i know it sounds mad but its true! and i'm not messing you around.

Answer 6

We are all engaged in time travel at this very moment.

If you mean traveling to some point in the future, yes, you can vastly slow down the rate at which *you* age, but the world will still go on around you.  You'll simply be, for lack of a better word, frozen for the duration of your journey.

Addendum: adj145 - Actually, time wouldn't be slowed quite that much.  Time flows at half its normal rate at .87c, so if you spent one year (your time) on a round trip from Earth and back, traveling at 87% the speed of light, when you get back, two years would've passed on Earth.

Now, if you mean traveling into the *past*, then, nope, I'm afraid not.  Sending *anything* into the past, regardless of what it is, from simple information to an actual person, cannot be done.  It violates causality, one of the two most fundamental principles the universe is based on (the other being conservation).