Quote:
Originally Posted by Draco Spirit
I was playing Steins:Gate the other day and interesting point came up in regards to time travel. That if you went back to the exact same spot one second in the past, you would have moved great relative distance because things like the earth, the solar system and the galaxy are all constantly moving.
Out of curiosity has there ever been any serous theories or explorations of using this point for effective FTL movement?
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Velocity is relative within its frame of reference, so it only really matters if there's a sizable difference in relative velocity between your starting location and your ending location. Besides, the velocities involved in the motion of the earth, solar system, and galaxy are so much lower than that of the speed of light that they're little more than rounding errors. That's something that is definitely considered in real astronautics, like for the New Horizons mission to Pluto, for instance, but never really makes it into the stories because frankly, math is boring to most people. I doubt you're going to see much mention of it in fiction, either, for the same reason.