New results from NASA's Galaxy Evolution Explorer and the Anglo-Australian Telescope atop Siding Spring Mountain in Australia confirm that dark energy is a smooth, uniform force that now dominates over the effects of gravity. The observations follow from careful measurements of the separations between pairs of galaxies.
But what causes that "smooth, uniform force" that rules over gravity? Astronomers have known for years that something unknown apears to be "pulling" our Milky Way and tens of thousands of other galaxies toward itself at a breakneck 22 million kilometers (14 million miles) per hour. But they couldn’t pinpoint exactly what, or where it is.
more
http://www.dailygalaxy.com/my_weblog/2011/05/is-dark-energy-antigravity-cern-asks-is-it-leakage-from-an-adjacent-universe.html#more