Originally posted by twhitehead
You are way off. Most of what you said is wrong.
Besides the original poster said nothing about going faster than light.
Also, that if one left point A at the speed of light they would arrive at their destination and return to see their departure from point A.
As if you travel the speed of light you'll move backwards in time. This is
not the way I've understood it at all, so I explained how I've had it
explained to me. If I'm so off, please don't hesitate to explain what I've
It's my understanding that you can't really move backwards in time as
that would require you to reverse time itself, not for your physical body,
but for the rest of the universe. How could that possibly be done? When
you're moving forward in time, you're not really affecting the universe
itself, but skipping so and so much physical degradation (aging) by
moving so fast that time itself has no effect on your physical body.* In
doing so, you would experience like one day while others who's not
moving as fast might experience a week (depending on the speed and
* When I speak of time and timeframes, I'm obviously not talking about
time as a tangible existence that can be affected by any means. I'm
talking about movement. Reversing time would mean to reverse the
movements of every particle in the universe (except the ones that make
you up) so that they take the exact same positions as they took before
(or you'd get an alternate history). When moving forward, you're taking
yourself out of the universe for so and so long so that your body is not
affected by the movement and ongoing interactions between particles in
the universe such that when you re-enter (slow down to a speed that is
again too slow to not interact with the surrounding) you haven't aged a
bit, but everyone else may have aged years (depending on how long
you've been away from the influence of time). Another way to travel
forward in time then, would be if you're put in cryopreservation where
your body won't be affected by time and then revived some 100 years
later. You'd still be a young man while everyone you knew are either
dead or ridiculously old. To you, no time at all has elapsed.
Interesting link. Apparently, you can't go faster than light as if you do
there's no telling what will happen. It's not science even, but a funny
thought experiment. 🙂
Another link on the subject (I'm actually learning as I move forward in
time here - usually I just move forward in time):
an object traveling at high speeds ages more slowly than a stationary object. This means that if you were to travel into outer space and return, moving close to light speed, you could travel thousands of years into the Earth's future.
And I guess the page after the above one really slaps me in the face
for saying that it's impossible to travel backwards in time: