For 1 the idea i am proposing is not possible with our current technology. So let me explain an idea.

For starters i'm sure all of you have heard of the Hubble telescope. The Hubble telescope can see thousands of light years into our galaxy.
With that being said a light year is the time it takes light to travel 1 year, but if you could go faster than the speed of light and say travel for 10 years. When you are done traveling you look back at the earth from 10 light years away with the light from 10 years ago on earth shining at you. could you then look at the earth with the Hubble telescope and view the past?

That is what the equations seem to imply if you push them to the limit. Of course, the equations also tell you that you will need an infinite amount of energy to accelerate to a velocity faster than light, which seems to be a big problem. They also tell you that while you are traveling faster than light, you will experience things in opposite order (events will appear to happen backwards). But you are right in that faster than light travel, and time travel are intimately related (or at least appear to be).

This is exactly what the Hubble is doing right now by looking at Galaxies Hundreds and Thousands of Light years away. We are seeing the Light from long ago, not what is presently there. The Oldest so far identified is over 13 Billion Light years away. so we actually are seeing it as it "would have appeared" 13 billlion years ago.

hmmm

a light year isn't time...

sorry buddy

terribly sorry to bring to your notice that light still needs time to travel that distance

This post was edited by brmv on Dec 25 2013 10:34pm

a light year is the distance light can travel in 1 year....


the time it takes.... is 1 year.....

thanks for handling that for me

Yes, presumably if FTL travel was possible and the telescope you used was powerful enough you'd be able to see Earth in the past. This I think wouldn't even take into account the additional time dilation caused by warping spacetime due to FTL travel.

This post was edited by Voyaging on Dec 27 2013 07:48pm

from pure speculative point of view, yes, you can see what happened in the past. Like watching an old picture/movie, but that's about it.
and for it to happen, you will need to stop, or be traveling slower then the speed of light.
Cant see something if the light cant hit your eyes/camera (facing the Earth while traveling faster then light)
None of that backwards experience / living in the past thing is possible.

just my 2 cents from my drunken head, lol
p.s. and to check what year you will be looking at compared to your start one:
('your speed'/ 'speed of light') x 'time traveled' - 'time traveled'
100x times faster for 10 'birthdays' will let you take a peak right before the crusades, lol

yea from what i understand its not possible to see the past.

I dont understand what people mean about gravity stretching time.

time is a neverending constant, it cannot be controlled, manipulated, or messed with. Only measured.