[Mr. K]

Don’t speak with such certainty about things like that. It sounds too much like the government officials who wanted to shut down the Patent Office after the Steam Engine was invented, since they thought everything that could be invented already was.

What we DON’T know about space travel is probably enormous compared to what we do know.

And the math for gravitational travel (instantaneous point to point) does exist. Wormholes are more than a theoretical construct.

We just don’t know how to make and control them yet

[But I am biased- I believe Bob Lazaar’s story about the gravitational drives on the alien spacecraft he worked on at Groom Lake (Area 51)]

[MHGinTN]

If you want to talk gravitation nullification, there is some very good math from Haisch, Rueda, and Puthoff showing that it is the zero point field from which inertia and gravity arise. [Google their 2005 paper on the topic]

The more I study the issue and the math, the more I am lead to believe that our concept of time is the problem, and that the zero point field represents the most fundamental 'temporal force', as in pointing vectors being temporal phenomena. I won't get more intricate that that on an Internet forum.

[Boogieman]

“Wormholes are more than a theoretical construct.”

Sure, they are more than theoretical, but still useless for travel purposes. You could jump into a wormhole that is connected to another wormhole lightyears away, but you could never get out of the wormhole, so it’s a dead end for us.