And a little bit about where we are; but why is it taking us so long? These two are very interesting; and there's more when they came from: [ame=http://www.youtube.com/watch?v=Rr_s28wIOzQ&playnext_from=TL&videos=TruM2NVOfeA]YouTube - Antigravity Physics Explained (NEW!) From AlienScientist! [/ame] [ame=http://www.youtube.com/watch?v=9xnh5Nd4DzM&NR=1]YouTube - AntiGravity Physics Background & Initial Research [/ame]

I'm not informed enough to comment on this field of endeavor; my son, however, made the following comment he sent to me in an email:

Gravity waves turn out to be space dust... Gravitational waves turn to dust after claims of flawed analysis Wednesday 4 June 2014 ~ Astronomers who thought they had detected echoes of the big bang may have only seen the effects of space dust

An Indian theoretical physicist by the name of Amal K Raychaudhuri published a paper in 19555 titled Relativistic Cosmology I. This is known as Raychaudhuri equation today. His work became really famous after Hawking and Penrose derived Raychaudhuri equation to prove singularity in general relativity. Raychaudhuri introduces the idea that rotation and shear affect gravity. Assumption is made in his thesis that the universe is represented by a time dependent geometry but is not necessarily isotropic. The conclusion is: gravity (the force of attraction) is a result of matter interacting with time-space curvature while anti-gravity (the force of repulsion) is a result of matter interacting with time-space torsion. It is the anti-gravity which accounts for one of the reasons for comoving nature of our universe. To get the full picture, one should read following papers in that order: 1. Theory of Special Relativity ~ Albert Einstein 2. Theory of General Relativity ~ Albert Einstein 3. Relativistic Cosmology I ~ Amal K Raychaudhuri 4. Large Scale Structures of Space-Time ~ Hawking & Ellis