Way off on a limb, because the scientists are way off on a limb, that is not even a limb because a limb is connected to a tree that is grounded. We still profoundly do not know what gravity is, so science is really good modelling but not involved in principles if it thinks it has a grasp of gravity in its modelling because it has a functional fit for material control. To start to see were we went wrong and not that we have a answer yet ( I am working on it) , read this article and check out the video. To get some alternative views helps.
http://www.thunderbolts.info/thunderblogs/thornhill.htm
http://video.google.com.au/videoplay?docid=4773590301316220374
I like that emersondds,
coming from the known can be less risky , but quite limiting and boring.
coming from the unknown though risky is an opening to new ways of being and new explorations to experience.