... Giant Cluster Bends, Breaks Images . ... What are those strange blue objects? Many are images of a single, unusual, beaded, blue, ring-like galaxy which just happens to line-up behind a giant cluster of galaxies. Cluster galaxies here appear yellow and -- together with the cluster's dark matter -- act as a gravitational lens. Journey to the Center of the Galaxy . ... What wonders lie at the center of our Galaxy? ... Blue Marble 2000 . ... Flying Over Asteroid Eros West End . ...