This image from NASA's Phoenix Mars Lander's Robotic Arm Camera (RAC) shows material from the Martian surface captured by the Robotic Arm (RA) scoop during its first test dig and dump on June 1, 2008. The test sample shown was taken from the digging area informally known as "Knave of Hearts." Credit: NASA/JPL-Caltech/University of Arizona/Max Planck Institute
