Resources Dark Material in the Ejecta of a Small Crater Photojournal: PIA15547 Source: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA Published: April 5, 2012 This image from NASA's Dawn spacecraft, located in asteroid Vesta's Urbinia quadrangle in the Vestan southern hemisphere, shows a small crater with ejecta made of dark material. ENLARGE