Astronomers have mapped dark matter on the largest scale ever observed Good news: Those tiny distortions in the images of distant galaxies, called cosmic shear. And here's Dark Matter map and the full moon to scale. The observations show that dark matter in the Universe is distributed as a network of gigantic dense (light) and empty (dark) regions, where the largest dense regions are about the size of several Earth moons on the sky. The densest regions of the dark matter host massive clusters of galaxies. To get these accumulated images over five years scientists used the wide field imaging camera MegaCam, a 1 degree by 1 degree field-of-view 340 Megapixel camera on the CFHT in Hawaii. The scientists are optimistic: http://www.physorg.com/news/2012-01-astronomers-universe-dark-unprecedented-scale.html http://www.physorg.com/news/2012-01-clearest-picture-dark-energy.html The bigger more accurate and better Dark Matter map they get the better we will understand our Universe. It will shed some light on dark energy as well. I just hope there will be more and more of new tools available to physicists in their study so we could get more info.