Experience what it's like to fly through the universe faster than the speed of light by watching this video animation . The Sloan Digital Sky Survey III (SDSS-III) released the largest-ever three-dimensional map of massive galaxies and distant black holes, which will help astronomers explain the whopping 96% of the universe that is unaccounted for – ordinary matter makes up just 4%, the rest is mysterious dark energy and dark matter. SDSS used the map to create a video fly-through of its galaxy imagesPhotograph: Johns Hopkins University/Adler Planetarium/Lawrence Berkeley National Laboratory/SDSS-III