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Consider this. If you were on a planet 1000 light years away from earth and was looking at the earth through a telescope you would be seeing what was happening here 1000 years ago. Now, what if you were on earth and had a spaceship that could travel faster than the speed of light and went out to that planet that was 1000 light years away, turned around and came back to earth would you go back in time? Probably not, but its interesting to think about.
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