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Originally Posted by khallianen
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Well, my math skills are too horrible to understand that.
It's all just theory though, more of a thought experiment than an actual experiment that proves something. When they actually do something with it, then I'll be impressed.
I mean how do we realistically travel back in time? You might have to reverse the motions of the planets and universe. If you wanted to travel back 1/2 a year, then that's when the earth was on the other side of the sun, and all the rest of the universe in that moment of time. You would have to reverse the age of the universe itself.
When we stereotypically think of traveling back in time, we imagine everything else except ourselves reversing back in time, but I don't think that's a realistic thought. Achieving this is far more complicated than doing some math.
However, the time manipulation I talked about is real and provable with real life experiments. It's practical and achievable realistically. Sorry I believe the correct terminology is time dilation, if you want to research it.
The only thing I can think of as for reversing time, is to probably jump into a black hole and return to the singularity lol. Because time stops at C, the speed of light, but not even light can escape the massive gravitational pull of a black hole up to the event horizon, so you might be traveling at greater velocity than the speed of light once you jump into that black hole. But you wouldn't survive, you would just become part of the singularity. That would also violate what we know though, that mass can't be accelerated past 99.999%(not sure how many 9's there really are) the speed of light. Basically here on earth, we can't even make time stop for us or anything with mass, let alone reverse time.
We time travel everyday, when you sit down you experience slower time than when you stand up. When you walk or run you experience slower time, when you drive your car you experience slower time. Time is all relative to gravity and velocity. Speed and velocity is artificial gravity.