Shamelessly ripping off Lawrence Krauss' arguments about warp drive (in his two books about physics in Star Trek):

In principle, it is possible to achieve FTL by "warping" space around a ship, but this requires manipulation of energy and mass distributions comparable to black holes.

But, in order to "warp" space in front of the ship, one needs to send out signals which are still bound by the speed of light (as far as we know, changes in gravitational field propagate with the speed of light).

Therefore, even if we were able to warp space, we would not be able to do it FTL.

:-k I think wormholes are the way to go.

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papageno


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