All you need to do is use Python:
(Image courtesy
XKCD; used in accordance with the
Creative Commons Attribution/Non-Commercial 2.5 license.)
Frankly, we don't know what gravity
is yet. Yes, we have defined its
effects, but we don't know what makes it work. It may or may not be related to the forces we
do sort of understand (the electromagnetic force and the strong and weak nuclear forces), but all we really know is that it is somehow related to mass --
and we don't understand mass. It has been proposed that mass is moderated by the Higgs boson, but that's just a transfer of blame, so to speak; it still doesn't explain the phenonemon of mass, nor does it explain how gravitation works.
Tesla claimed, in his later life, to have found a means for overcoming gravity. Well, Tesla claimed to have discovered a lot of things in his later life that were a bit outrageous, but let's give him the benefit of the doubt in this particular matter. What would that statement have meant? Did he, in fact, find a way to eliminate mass (or its effects, which would also include momentum and inertia), or just a way to counteract the force between an object and the earth locally (an equal and opposite repulsive force)? And if that's the case, how much power would be required to sustain it? Is it something that an "antigravity ship" could carry with a lesser mass penalty than propellants? If not, then we're still stuck with carrying enough fuel to leave our destination object, navigate the gravitational wells of other bodies, etc.
It's worth investigating (that's what the
LHC is for) but I wouldn't hold my breath waiting for a technological application of the concept.
