[Millee]

for a space vehicle propelled by a superconducting shield that alters the curvature of space-time outside the craft in a way that counteracts gravity.

Crap, I've been working on that very thing too. Sigh...back to the drawing board....

[GSlob]

What I always wanted was a gravity [glassless] lens for my camera - it would be the true and perfect apochromat, no color distortiuon or separation whatsoever.