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Warp Drives are in principal possible The key idea is to contract space-time in front of you and to expand it behind The Alcubierre Metric does just this, and is consistent with Einstein's Theory of General Relativitypic.twitter.com/vQuzMH6Him
the problem is that we don't know how to artificially create the necessary curvature without huge masses .. that is, we don't know how to make artificial gravity .. yet
Even with a huge mass... the negative energy density is a real problem
that's true i'm writing about that now
Faintly recalling some details, don't you need negative energy to get the negative curvature? I seem to recall some strange business with the stress-energy tensor required to get that shape.
Easy. Take a diamond about the size of Earth and spin it so that the surface approaches the speed of light. Spin it until pi=1. Done.
There's a "your mamma" joke in there somewhere. But aside from that, with ridiculously vast amounts of energy, we could theoretically convert it into mass, right? But even at neutron star density levels, volume might still be an issue.
Gravitons generates by the decay of some elements? :)
And what about stopping? What happens when the ship passes thru blue-shifted light?
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