Thanks for the links Rowan. If you scroll down to page 9 of the first links pdf you find the classic problem with warp drive and wormholes. You need exotic matter or negative energy; both exist only in theory.
A smart friend of mine pointed out that equations for wormholes and warp drives require a whole lot of energy (once you figure out a way to generate negative energy). To travel any significant distance you would have to convert the mass of a Jupiter size planet into energy! Yikes!
So yes, I think those theories are eventually going to open up space to us, but its not going to be anytime soon. More promising are the discoveries being made concerning electromagnetism and gravity. Some kind of gravity control, even if its merely a way to reduce the weight of a mass (easing fuel costs dramatically) will appear in our lifetimes.
And I wouldnt rule out a dramatic discovery that revolutionizes travel.
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