Chris Ambler, a veteran of the DNS wars, throws cold water on my plans to attend MIT's upcoming time travel convention at a later date to be announced. It seems that I will also need to perfect my FTL transport in order to get back here in a reasonable time from wherever the Earth has gone, cf. Ambler On The Net, An Aside… The Future Is Now… and Then.
On the other hand, I was always under the impression that the light-speed barrier is tied to our inability to travel in time, as doing so could mean that some information had traveled faster than light. Even so, the navigation issue looks substantial.
Which actually brings me to a serious question I've wondered about for years: given the movement of the galaxy, the solar system, our galactic cluster and all the other things rushing and spinning, about how fast is everyone on Earth actually moving relative to frame of the universe's center, if there is one? I suspect that's not as meaningful a question as it feels, given what I dimly recall about theories of expansion of the universe, and the serious possibility that there is no there back there, but I'd like to know anyway.