What is gravity and anti gravity and how does it work .. it is a question scientists all over the world have been asking for many years .. Some geniuses had allready builded the anti gravity devices ..

HOw do UFO's fly .. Some theories are presented in this documentary.
Some evidence is being shown that not all UFO's come from outer space, like old project nazis were working on called the bell, and highly secret project witch takes place in the united states called AURORA.
Anti gravity devices and antigravity-airplanes are being build here on earth as secret projects.
We know very little abot them, so how do they work? This documentary might be the answer to this question.

http://video.google.com/videoplay?do...nasa+ufo&hl=da