[Physicist]

Pardon me - please tell me what gravity is, since there is no anti-gravity.

It's the curvature of spacetime. Feel free to tell me what the opposite of that is.

[XBob]

40 - "It's the curvature of spacetime. Feel free to tell me what the opposite of that is."

Sorry you have no immagination. if gravity is the curviture of spacetime, then anti-gravity would be the opposite curve - you know - convex versus concave - simple.

No wonder we aren't getting anywhere in physics, if you are any example of an American physicist. You have nothing to contribute to this discussion, only dissention.

The point I was making is that we need a quantum leap in space travel mecanisms/methodolgy or we are never going to get off this planet,

Chemistry is not the way to do it - hopefully physics is, but apparently we have no hope with physicists like you.